Snoring, poor sleep: what eight weeks of lifting changed

New study

This is one study, not a conclusion. It deals with something a lot of people put up with for years: loud snoring, broken sleep and mornings that feel like you never went to bed. Often the cause is obstructive sleep apnea. A trial published in October 2026 asked whether lifting weights changes how people with it sleep.

What sleep apnea is, and why it wears you out

With obstructive sleep apnea, your throat narrows or closes again and again during the night. Breathing stops for a few seconds until your brain briefly wakes you to restart it, and then you drift off again without remembering any of it. When that happens dozens of times an hour, you can spend the whole night in bed and still not get real rest.

The standard treatment is CPAP, a machine that pushes air through a mask while you sleep. It works, but plenty of people struggle to wear it every night, which is why researchers keep looking at what else helps. Exercise has been on that list for years. In May 2026, mindbodygreen reported that strength work came out ahead of every other type of exercise for sleep quality in the analysis it cited.

Then on October 16, Women's Health covered a study linking at least 10 minutes a day of moderate to vigorous activity with deeper sleep early in the night. Those participants were college students wearing fitness trackers. The trial below looks at a much harder case.

What was tested in Brazil

The trial comes from de Almeida and colleagues at the Federal University of Pernambuco and appeared in the journal Sleep and Breathing. It enrolled 25 adults with moderate to severe sleep apnea who weren't getting any treatment for it yet. Their average age was 54.6, and their average body mass index was 36.1, which falls in the obesity range.

These were serious cases, with an average of 52.2 episodes of stopped or shallow breathing per hour of sleep. Participants were randomly assigned either to strength training three times a week, with exercises for both the upper and lower body, or to a control group that did stretching sessions twice a week.

What changed in eight weeks

Sleep was measured with the Pittsburgh Sleep Quality Index, a widely used questionnaire where a lower score means better sleep. The strength group's score dropped by 3.2 points, while the stretching group's score barely changed. People who lifted said they fell asleep faster and slept longer.

Their sense of how life was going improved, too. On a quality-of-life questionnaire, the strength group gained 10.8 points and the control group lost 3.4. The emotional side showed the biggest gap. The main analysis of the same trial, published earlier, had already found fewer breathing pauses in the people who trained.

What didn't change

Daytime sleepiness, the kind that makes you nod off on the couch or in a meeting, did not improve more in one group than the other. According to the authors, it depends on many things besides how often breathing stops at night. So in this trial, better sleep at night didn't mean feeling more awake in the afternoon.

What the broader evidence says

Studies on exercise and sleep apnea have been pooled before. In 2024, the Journal of Clinical Sleep Medicine published a systematic review and meta-analysis by Lin and colleagues covering 12 trials and 526 patients, in which aerobic or strength training cut breathing pauses by 7.08 an hour on average and lowered daytime sleepiness scores by 2.37 points.

The benefit showed up regardless of starting weight or how severe the apnea was, and combining strength with aerobic work tended to do better. There was one catch. In people already using CPAP consistently, exercise improved fitness but did not reduce breathing pauses or sleepiness. The new trial points the same way as the meta-analysis, except on sleepiness.

The limits of this study

Who was studied: 25 middle-aged adults with obesity and untreated moderate to severe apnea, all at a single center. If you already use CPAP, are a different age or are at a healthy weight, the results may not apply to you. This was also a secondary analysis, and the sample size was calculated to measure breathing pauses, not how people rated their own sleep.

How long it lasted: the trial lasted eight weeks, so nobody knows yet whether the improvement holds up. Who funded it: CAPES, Brazil's public agency that supports research training. The authors report no conflicts of interest. And it has not been replicated yet, by another team or with other people.

What you can take from this

Loud snoring and waking up exhausted are more than an annoyance: sleep apnea is diagnosed with a sleep study, and treatment is your doctor's call. Exercise doesn't replace CPAP, but it adds something, and strength training, which usually takes a back seat to cardio in this research, held up well here.

Sleep and training also feed each other. We've covered how a good night's rest shapes what you get out of every workout, and why a short night can lead you to eat worse the next day. This trial looks at the reverse direction, where training may help you sleep.

If you want to try it, a sensible first step is a conversation with your doctor, especially if someone has told you that you stop breathing in your sleep. Once you have the go-ahead, two or three strength sessions a week for your legs, back, chest and arms, with weights you can move with good form, are a low-risk way to see whether you notice a difference, without giving up CPAP if you already use it.

At Gym Triple X we see it this way: a few well-run strength sessions every week beat a perfect plan that's dropped after a month, and better sleep is a bonus worth having.

If you'd like help putting those sessions together around your body and your schedule, a personal trainer on the Costa del Sol can work with you from the very first session, at a pace that suits you.