Resistance training tops the list of drug-free sleep fixes

Sleep underpins physical, cognitive and psychological health, and people with poor sleep quality may be at risk of developing negative health outcomes. Most research on drug-free sleep hygiene strategies has focused on elderly people, leaving younger and middle-aged adults surprisingly under-served. The authors also note that approximately half of nonelderly individuals meet criteria for locomotive syndrome, a sign that younger people cannot take their health for granted. That gap raises a practical question: of all the drug-free ways to improve sleep, which one works best for people who are not yet old?

The team ran a systematic review and network meta-analysis, a design that compares multiple interventions against each other even when they were never tested in the same trial. They comprehensively searched the Cochrane Central Register of Controlled Trials, Medline, CINAHL, the Physiotherapy Evidence Database and Scopus. Twenty-seven randomised controlled trials of nonpharmacological sleep hygiene strategies in nonelderly individuals were identified, and 24 of them supplied data for the network analysis. The interventions spanned exercise, general physical activity and nutritional approaches.

Resistance training emerged as the most effective intervention for improving sleep quality in nonelderly individuals. The analysis also documented effects for other nonpharmacological approaches, including physical activity, nutritional interventions and other exercise interventions. The abstract does not report the size of the advantage resistance training held over the alternatives, only its top ranking. The authors describe this as the first report to use a network meta-analysis to compare these interventions in this age group.

Exercise has long been linked to better sleep, but most comparative evidence concerned older adults, where sleep hygiene strategies are well investigated. This analysis extends the question to nonelderly people and adds something the individual trials could not: a ranking across intervention types. It confirms that drug-free approaches can move sleep quality and singles out strength work as the front-runner. Open questions remain around how large the benefit is in practical terms, what dose of resistance training matters, and why lifting would outperform other forms of exercise.

If you lift weights mainly for strength or physique, this is a reason to think the habit may be paying a second dividend at night. For anyone weighing up drug-free routes to better sleep, the ranking puts resistance training ahead of the alternatives tested, which is worth knowing given how often sleep advice centres on wind-down routines and screens. The evidence here says nothing about how heavy, how often or how close to bedtime, so those details remain for future research to settle.