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1. Supplementswell supported · human dataAdded 29 July 2026

   Creatine adds muscle, but far less than the hype

   A meta-analysis of 10 randomised trials using direct muscle imaging found that adding creatine to resistance training produces only a very small extra increase in muscle size compared with training plus placebo. Gains in upper- and lower-body muscle thickness were in the region of 0.10-0.16 cm.

   ⚠What it shows: Meta-analysis of 10 RCTs (44 outcomes) in healthy adults; the pooled effect was very small and its credible interval crossed zero; several authors declared ties to the creatine industry.Meta-analysis · Nutrients

   Full breakdown →Creatine monohydrate guide →Creatine Calculator →The Effects of Creatine Supplementation Combined with Resistance Training on Regional Measures of Muscle Hypertrophy: A Systematic Review with Meta-Analysis. Nutrients 2023
2. Nutritionwell supported · human dataAdded 29 July 2026

   More protein means more muscle, but only a little

   A meta-analysis of 74 randomised trials found that eating more protein adds small extra gains in lean mass and lower-body strength for healthy adults doing resistance training. Lean-mass benefits appeared at 1.2-1.59 g of protein per kg per day in adults 65 and over, and at 1.6 g/kg/day or more in younger adults.

   ⚠What it shows: Meta-analysis of 74 RCTs in healthy, non-obese adults; the lean-mass effect was small (SMD 0.22, moderate-level evidence), strength evidence was rated low, and some authors have food-industry ties.Meta-analysis · J Cachexia Sarcopenia Muscle

   Full breakdown →Muscle protein synthesis explained →Protein Intake Calculator →Systematic review and meta-analysis of protein intake to support muscle mass and function in healthy adults. J Cachexia Sarcopenia Muscle 2022
3. Trainingwell supported · human dataAdded 29 July 2026

   Lifting beats vibration plates for ageing muscles

   In older people with sarcopenia, resistance training and mixed training significantly improved knee-extension strength and gait speed, while whole-body vibration training improved neither. Chair-stand times did not improve with any exercise mode.

   ⚠What it shows: Meta-analysis of 26 studies (25 RCTs plus one non-randomised trial, 1,191 older adults with sarcopenia); heterogeneity was high in several analyses and chair-stand performance did not improve with any mode.Meta-analysis · BMC Geriatr

   Full breakdown →Sarcopenia explained →Effects of different exercise training modes on muscle strength and physical performance in older people with sarcopenia: a systematic review and meta-analysis. BMC Geriatr 2021
4. Cardiowell supported · human dataAdded 29 July 2026

   Isometric exercise shows biggest blood pressure drop

   Across 93 randomised trials, endurance, dynamic resistance and isometric resistance training all lowered resting blood pressure, with isometric training showing the largest systolic reduction at -10.9 mm Hg. Endurance training worked best in people who already had hypertension.

   ⚠What it shows: Meta-analysis of 93 trials (5,223 participants), but the standout isometric figure rests on only 5 training groups, so the comparison between modes is far less certain than the overall benefit.Meta-analysis · J Am Heart Assoc

   Full breakdown →Blood pressure explained →Heart Age Calculator →Exercise training for blood pressure: a systematic review and meta-analysis. J Am Heart Assoc 2013
5. Trainingpreliminary · human dataAdded 29 July 2026

   Pilates tops the rankings for chronic back pain

   A network meta-analysis of 89 studies in chronic non-specific low back pain ranked Pilates most likely to reduce pain, with resistance and motor-control exercise best for physical function. Stretching and McKenzie exercise did not outperform doing nothing.

   ⚠What it shows: Network meta-analysis of 89 studies (5,578 patients), but the synthesised evidence was rated low quality under GRADE, with high heterogeneity and few low-risk-of-bias trials: rankings are indicative, not definitive.Meta-analysis · Br J Sports Med

   Full breakdown →Back Pain →Which specific modes of exercise training are most effective for treating low back pain? Network meta-analysis. Br J Sports Med 2020
6. Mindwell supported · human dataAdded 29 July 2026

   Any exercise mode eases depression and anxiety

   In adults diagnosed with depression or anxiety, exercise produced a large improvement in depressive symptoms and a moderate improvement in anxiety symptoms across randomised trials. Aerobic, resistance and mixed programmes were all beneficial.

   ⚠What it shows: Meta-analysis of 26 RCTs (2,681 participants) in adults with diagnosed depression or anxiety; the anxiety analysis rested on only 11 studies, and the review could not crown a single best exercise mode.Meta-analysis · Int J Ment Health Nurs

   Full breakdown →The Effects of Aerobic and Resistance Exercise on Depression and Anxiety: Systematic Review With Meta-Analysis. Int J Ment Health Nurs 2025
7. Mindwell supported · human dataAdded 29 July 2026

   133 reviews agree: exercise sharpens the mind

   An umbrella review pooling 133 systematic reviews and 2,724 randomised trials found exercise improves general cognition, memory and executive function across all populations and ages. Effects were generally larger for low- and moderate-intensity activity.

   ⚠What it shows: Umbrella review of 258,279 participants; effects were modest in size (SMD 0.24-0.42), overlap between the included reviews is inherent to the design, and review quality varied, though results held after excluding low-quality reviews.Meta-analysis · Br J Sports Med

   Full breakdown →Executive function explained →Effectiveness of exercise for improving cognition, memory and executive function: a systematic umbrella review and meta-meta-analysis. Br J Sports Med 2025
8. Cardiowell supported · human dataAdded 29 July 2026

   Five-minute 'exercise snacks' boost fitness

   'Exercise snacks', bouts lasting 5 minutes or less, done at least twice a day, significantly improved cardiorespiratory fitness in physically inactive adults across 11 randomised trials. They did not improve blood pressure, body composition or blood lipids.

   ⚠What it shows: Meta-analysis of 11 RCTs with only 414 participants (69.1% women); the fitness result had moderate certainty with high heterogeneity, and the older-adult endurance finding was rated very low certainty.Meta-analysis · Br J Sports Med

   Full breakdown →VO₂max explained →VO2max Calculator →Effect of exercise snacks on fitness and cardiometabolic health in physically inactive individuals: systematic review and meta-analysis. Br J Sports Med 2026
9. Mindwell supported · human dataAdded 29 July 2026

   Exercise shows large effects on depressive symptoms

   Across 41 randomised trials in 2,264 adults, exercise produced large reductions in depressive symptoms compared with non-active controls, with a number needed to treat of 2. The effect remained moderate when analysis was restricted to the 12 low risk-of-bias trials.

   ⚠What it shows: Meta-analysis of 41 RCTs (2,264 participants post-intervention); many trials were small with high heterogeneity in methods, and the effect shrank to moderate in the 12 low risk-of-bias studies.Meta-analysis · Br J Sports Med

   Full breakdown →Meta-analysis explained →Heart Rate Zone Calculator →Exercise as medicine for depressive symptoms? A systematic review and meta-analysis with meta-regression. Br J Sports Med 2023
10. Nutritionwell supported · human dataAdded 29 July 2026

    Dieting alone risks muscle loss near retirement age

    A network meta-analysis of 92 trials in adults aged 55-70 with overweight or obesity found that combining calorie restriction with resistance or mixed exercise and high protein intake was the most effective strategy for nearly all body-composition outcomes. Energy restriction alone was less effective and tended to decrease muscle mass.

    ⚠What it shows: Network meta-analysis of RCTs: 92 studies included, 66 of them (4,957 participants) usable for pooling; interventions lasted only 8 weeks to 6 months, and network comparisons are partly indirect.Meta-analysis · Adv Nutr

    Full breakdown →Sarcopenia explained →Calorie Deficit Calculator →Nutrition and Exercise Interventions to Improve Body Composition for Persons with Overweight or Obesity Near Retirement Age: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials. Adv Nutr 2023
11. Supplementswell supported · human dataAdded 29 July 2026

    Whey protein improves muscle in sarcopenic older adults

    In a meta-analysis of 10 randomised trials with 1,154 participants, whey protein supplementation improved muscle mass and gait speed in older adults diagnosed with sarcopenia, and combining it with resistance training significantly increased handgrip strength.

    ⚠What it shows: Meta-analysis of 10 RCTs (1,154 older adults with diagnosed sarcopenia, community and hospital settings mixed); the authors say more studies are needed to validate the results.Meta-analysis · J Nutr Health Aging

    Full breakdown →Whey protein guide →Protein Intake Calculator →Improving sarcopenia in older adults: a systematic review and meta-analysis of randomized controlled trials of whey protein supplementation with or without resistance training. J Nutr Health Aging 2024
12. Recoverypreliminary · human dataAdded 29 July 2026

    Exercise eases athletes' back pain, but gaps remain

    Exercise-based treatments reduced pain and disability in athletes with low back pain, but no trial reported whether athletes actually returned to sport, and it remains unclear which treatment works best for whom.

    ⚠What it shows: Meta-analysis of 14 RCTs (541 athletes) with performance, attrition and reporting biases; no return-to-sport data for any exercise intervention; insufficient evidence for manual therapy or biomechanical changes alone.Meta-analysis · Br J Sports Med

    Full breakdown →Back Pain →Treating low back pain in athletes: a systematic review with meta-analysis. Br J Sports Med 2021
13. Trainingwell supported · human dataAdded 29 July 2026

    Mind-body exercise boosts bone and mood in menopause

    Mind-body exercise such as yoga, tai chi, Pilates and qigong improved bone mineral density, sleep quality, anxiety, depression and fatigue in perimenopausal and postmenopausal women across 11 randomised trials.

    ⚠What it shows: Meta-analysis of 11 RCTs (1,005 women); heterogeneity was high for the sleep, anxiety and depression outcomes; effects are standardised differences, so the real-world size of the benefit is unclear.Meta-analysis · Menopause

    Full breakdown →Bone density explained →Effects of mind-body exercise on perimenopausal and postmenopausal women: a systematic review and meta-analysis. Menopause 2024
14. Longevitywell supported · human dataAdded 29 July 2026

    Staying active after 60 tied to lower risk on many fronts

    Adults over 60 who stay physically active show lower risks of all-cause and cardiovascular mortality, breast and prostate cancer, fractures, recurrent falls, disability, cognitive decline, dementia and depression than inactive peers.

    ⚠What it shows: Umbrella review of 24 systematic reviews of longitudinal observational studies in adults 60+; these are associations, not proof that activity causes the better outcomes, and the review does not specify how much activity is needed.Systematic review · Scand J Med Sci Sports

    Full breakdown →All-cause mortality explained →Healthy Lifestyle & Life Expectancy →Consequences of physical inactivity in older adults: A systematic review of reviews and meta-analyses. Scand J Med Sci Sports 2020
15. Metabolic & GLP-1well supported · human dataAdded 29 July 2026

    Fasting vs calorie cutting: less magic than you think

    In adults with prediabetes or type 2 diabetes, intermittent fasting cut body weight by 4.56 kg and lowered HbA1c, fasting glucose, cholesterol and triglycerides versus control diets, but against straightforward calorie restriction it added only modest extra weight loss and no metabolic advantage.

    ⚠What it shows: Meta-analysis of 14 randomised trials (1,101 adults with prediabetes or type 2 diabetes); fat mass, insulin, LDL, HDL and blood pressure did not improve versus control, and versus calorie restriction there were no differences in glycaemic markers, lipids or blood pressure.Meta-analysis · Diabetes Obes Metab

    Full breakdown →Energy balance explained →Calorie Deficit Calculator →The effects of intermittent fasting on body composition and cardiometabolic health in adults with prediabetes or type 2 diabetes: A systematic review and meta-analysis. Diabetes Obes Metab 2024
16. Mindpreliminary · human dataAdded 29 July 2026

    Exercise gives working memory a lift in depression

    Exercise programmes produced a small but significant improvement in working memory in adults with mild-to-moderate depression. Effects on inhibition and cognitive flexibility, two other core executive functions, were not significant.

    ⚠What it shows: Meta-analysis of only 7 controlled studies (202 men, 457 women, aged 21-51, mild-to-moderate depression); high heterogeneity across trials; the authors say the shortage of high-quality studies precludes firm conclusions.Meta-analysis · Int J Environ Res Public Health

    Full breakdown →Executive function explained →Effects of Physical Exercise on Executive Function in Adults with Depression: A Systematic Review and Meta-Analysis. Int J Environ Res Public Health 2022
17. Mindwell supported · human dataAdded 29 July 2026

    Different exercise types, different brain gains

    Pooling 54 randomised trials in healthy children, adults and older adults, exercise improved overall cognition and every domain measured, with aerobic work showing the greatest benefit for global cognition, resistance training for executive function and mind-body exercise for memory. Older adults gained the most.

    ⚠What it shows: Systematic review and meta-analysis of 54 RCTs in healthy people; the type-by-domain comparisons come from moderation analyses across studies rather than head-to-head trials, and the authors say evidence on attention and information processing is still too thin to judge.Meta-analysis · Ageing Res Rev

    Full breakdown →Executive function explained →Effects of exercise interventions on cognitive functions in healthy populations: A systematic review and meta-analysis. Ageing Res Rev 2023
18. Trainingwell supported · human dataAdded 29 July 2026

    Blood flow restriction beats light lifting, not heavy

    Pooling 20 studies in musculoskeletal rehabilitation, low-load training with blood flow restriction produced a moderate strength gain (Hedges' g=0.523) and was more effective and more tolerable than low-load training alone, but heavy-load training still produced the larger effect (g=0.674).

    ⚠What it shows: Systematic review and meta-analysis of 20 studies, mostly small: ACL reconstruction (n=3), knee osteoarthritis (n=3), older adults at risk of sarcopenia (n=13) and one inclusion body myositis study, not trained athletes. The authors note cuff prescription is not yet individualised.Meta-analysis · Br J Sports Med

    Full breakdown →Sarcopenia explained →One-Rep Max Calculator →Blood flow restriction training in clinical musculoskeletal rehabilitation: a systematic review and meta-analysis. Br J Sports Med 2017
19. Trainingwell supported · human dataAdded 29 July 2026

    121 trials: lifting keeps older adults functional

    A Cochrane review of 121 randomised trials and 6700 older adults found progressive resistance training produced a large improvement in muscle strength and smaller but real gains in physical ability, gait speed and getting out of a chair. Pain fell in participants with osteoarthritis, though not in other trials of bodily pain.

    ⚠What it shows: Cochrane systematic review and meta-analysis of 121 RCTs, 6700 participants; the strength effect was large (SMD 0.84) but the gain in physical ability was small (SMD 0.14), and adverse events were poorly recorded, with joint pain and muscle soreness commonly reported where they were tracked.Meta-analysis · Cochrane Database Syst Rev

    Full breakdown →Sarcopenia explained →Strength Standards →Progressive resistance strength training for improving physical function in older adults. Cochrane Database Syst Rev 2009
20. Sleeppreliminary · human dataAdded 29 July 2026

    Swimmers slept more with 09:00 starts but swam no faster

    Delaying morning training from 07:00 to 09:00 gave national-level swimmers 1.0 h more sleep per night on average, but recovery and 100 m and 800 m time-trial performance did not measurably improve over the 8-day camps.

    ⚠What it shows: One cross-over RCT in 27 adolescent national-level swimmers across two 8-day training camps; the extra sleep produced no significant recovery or performance change in that short window, and results may not generalise to older or recreational athletes.Study · Sports Med Open

    Full breakdown →Sleep Calculator →Delaying Early Morning Training Time in Swimmers: Effects on Sleep, Recovery and Performance-A Randomized Controlled Trial. Sports Med Open 2026
21. Trainingwell supported · human dataAdded 27 July 2026

    Four exercise styles ease neck pain disability

    Across 51 randomised trials, mind-body, resistance, flexibility and coordination exercise were all associated with reduced functional disability from nonspecific neck pain. An exploratory analysis suggested benefits from around 100 MET-min per session, with larger effects around 300-400 MET-min.

    ⚠What it shows: Network meta-analysis of 51 RCTs (4,140 participants); interventions were heterogeneous and the dose-response analysis is exploratory, study-level data only.Meta-analysis · PeerJ

    Full breakdown →Training volume explained →Exercise modalities associated with reduced functional disability in nonspecific neck pain: a network meta-analysis and exploratory dose-response analysis. PeerJ 2026
22. Cardiopreliminary · human dataAdded 27 July 2026

    Home Thai-boxing HIIT lifts fitness in six weeks

    Six weeks of home-based Thai-boxing HIIT improved VO2 max, resting blood pressure, resting heart rate, grip strength, trunk endurance and body fat more than a general health-education programme in 58 sedentary young adults. Muscle mass and fat-free mass did not differ between groups.

    ⚠What it shows: One 6-week RCT, n=58 sedentary young adults in Thailand; short duration, no long-term follow-up, and the comparison group received a different active programme.Study · J Educ Health Promot

    Full breakdown →HIIT explained →VO2max Calculator →Effects of home-based Thai-boxing high-intensity interval training on physical fitness and body composition in sedentary young adults: A six-week randomized controlled trial. J Educ Health Promot 2026
23. Trainingwell supported · human dataAdded 27 July 2026

    Plyometrics boost youth jump, sprint and agility

    A meta-analysis of 63 studies found plyometric training significantly improved jumping (SMD 0.648), sprinting (SMD -0.496) and agility (SMD -0.659) in adolescents aged 10-19, with benefits more consistent when programmes ran at least 10 weeks.

    ⚠What it shows: Meta-analysis of 63 trials in healthy adolescents aged 10-19; between-study heterogeneity, variable testing protocols, and small sex- and sport-specific subgroups limit generalisability.Meta-analysis · PeerJ

    Full breakdown →Progressive overload explained →The effects of plyometric training on adolescent sports performance: a systematic review and meta-analysis. PeerJ 2026
24. Mindpreliminary · human dataAdded 27 July 2026

    VR waterscapes beat landscapes in exercise trial

    In a 12-week randomised trial of virtual reality exercise, participants viewing professionally produced 360° waterscapes improved mental quality of life, fat-free mass and BMI, and reported more restorativeness and less VR sickness than those viewing self-recorded landscapes.

    ⚠What it shows: Single RCT with 40 vs 32 participants over 12 weeks; the groups differed in video production quality as well as scenery type, and outcomes relied partly on self-report questionnaires.Study · J Formos Med Assoc

    Full breakdown →Restorative natural experiences in immersive landscapes and waterscapes during virtual reality exercise for mental health promotion. J Formos Med Assoc 2026

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