Why older women are waking up refreshed after picking up weights
You have tried going to bed earlier. You have cut back on coffee after noon. You have stared at the ceiling at 3am wondering what, exactly, is going wrong. For many Australian women in their 50s, 60s, and 70s, poor sleep is not just an inconvenience — it chips away at mood, memory, and the energy to do the things that matter.
A growing body of research is pointing to an unlikely solution: resistance training. Not marathon sessions at a commercial gym. Not anything that requires you to know what a rack pull is. Just consistent, moderate lifting two or three times a week, the kind accessible to most healthy older adults.
A 2025 randomised controlled trial published in Psychology of Sport and Exercise put this to the test in a way few studies have. Researchers at the State University of Londrina in Brazil, led by exercise scientist Paolo M. Cunha, randomly assigned 160 older women (average age 69.2 years) to either a 12-week supervised resistance training programme or a control group. They tracked sleep quality using the Pittsburgh Sleep Quality Index along with anxiety, depressive symptoms, and physical function.
The results were striking. Among women who started the trial with poor sleep, PSQI scores dropped from 7.26 to 4.61 after 12 weeks of resistance training — a clinically meaningful improvement that was also significantly lower than scores in the control groups. Anxiety and depressive symptoms fell in both resistance training groups. Functional capacity improved too.
"A 12-week resistance training program can improve subjective sleep quality, mental health, cognitive function, and functional capacity, regardless of initial sleep quality levels."
Cunha et al., Psychology of Sport and Exercise, 2025
This matters because poor sleep and poor mental health often amplify each other. You sleep badly, which makes anxiety worse, which makes sleep harder. Resistance training appears to interrupt that cycle at multiple points simultaneously.
What resistance training actually does to sleep
The mechanisms are not fully understood, but researchers have a few strong hypotheses. Lifting weights increases core body temperature, which then drops post-exercise, signalling to the brain that it is time to sleep. It also reduces cortisol over time, helps regulate circadian rhythms, and builds physical fatigue in the right way.
A 2026 meta-analysis by Yafan Li and colleagues, indexed in PubMed Central, reviewed 26 randomised controlled trials involving 2,189 older adults aged 60 to 90. The review found that low-frequency, short-duration, and low-to-moderate intensity exercise interventions can effectively improve subjective sleep quality in older adults. Even low-dose exercise can yield significant benefits. You do not need to train hard to sleep better.
This is the structural tension in most fitness messaging. We have been told exercise needs to be intense to count. For sleep quality in older adults, the evidence suggests the opposite may be true. Moderate and consistent beats hard and sporadic.
The barrier most women have heard before
Most commercial gyms are designed around young men chasing aesthetics, and the culture can feel alienating. But resistance training does not require a gym membership, a barbell, or even a lot of equipment.
The study by Cunha and colleagues used a programme of eight exercises with 8 to 12 repetitions each, progressing in load over time. Seated rows, leg presses, chest presses — functional movements that replicate daily life. Two to three sessions per week, each lasting under an hour.
The Australian Government physical activity guidelines for older adults (65 and over) already recommend muscle-strengthening activities on at least two days per week. That is the floor, not the ceiling.
Many community centres and local sports clubs across Australia run structured resistance classes specifically for older adults. Group settings tend to support consistency, which matters more than intensity when you are aiming for sleep improvement. If you are looking for options near you, KeepActive lists fitness groups and classes for older adults in your area.
Frequently asked questions
Does resistance training actually improve sleep, or just make you tired?
Research distinguishes between the two. Resistance training improves sleep quality scores on validated measures like the Pittsburgh Sleep Quality Index, meaning it improves how you experience sleep (falling asleep, staying asleep, waking refreshed), not just how physically worn out you are.
How many sessions per week do I need?
The study by Cunha et al. used two to three sessions per week over 12 weeks. Other research supports that two sessions weekly is an effective minimum, with sessions of 30 to 60 minutes each.
What if I already sleep reasonably well?
The 2025 RCT found that resistance training improved mental health outcomes for women across both the poor-sleep and good-sleep groups. So even if sleep is not your primary concern, the anxiety and mood benefits may be worth exploring.
Is it safe for women over 65?
The study included women with an average age of 69, and the programme was designed to be safe and progressive. Checking in with your GP first is sensible, particularly if you have joint concerns or cardiovascular conditions.
What type of exercise is best for sleep in older adults?
Different exercise types show different benefits. Resistance training appears particularly effective for subjective sleep quality and has the added advantage of improving strength, balance, and mental health simultaneously.
How long before I notice a difference?
The Cunha study saw measurable improvement over 12 weeks. Some participants likely noticed changes earlier. Consistency matters more than perfection here.
A practical starting point
If you have been curious about resistance training but have not known where to start, the barrier is lower than it looks. A community gym with older-adult classes, a local council fitness programme, or even a physiotherapist-led strength group can give you the foundation.
The evidence keeps pointing the same direction. You are not too old for this. The research was done on women your age. A few months of consistent lifting could be the thing that finally has you waking up actually rested.
