Body and movement

Exercise in perimenopause matters most for what the transition does to your body over the long run. Lean mass starts to fall and bone loss is fastest around the final period, so strength training on two or more days a week deserves top priority, alongside 150 to 300 minutes of moderate aerobic activity and some balance work. Exercise is not a reliable treatment for hot flashes, but it helps muscle, bone, heart health, sleep and mood.

Where to start

Begin with exercise in perimenopause: what to prioritize, which builds a sample week from the federal guidelines. If you have never lifted, strength training for women over 40 covers how often, how heavy and how to progress. If bone density is your concern, read weight training and bone density after 40.

What exercise can and cannot do

Goal	What the transition changes	What the evidence supports	Read the guide
Keep muscle	Lean mass declines from the start of the transition until about two years after the final period	Resistance training; hormone therapy did not meaningfully protect muscle in trials	Muscle loss in midlife
Get stronger	Strength drops faster than muscle size	Major muscle groups at least 2 days a week; bands, machines and free weights all work	Strength training over 40
Protect bone	In SWAN, women lost 10.6% of spine bone density over 10 years around menopause	Lower-body resistance and impact training; a small but possibly important effect	Weight training and bone density
Metabolism	Size-adjusted energy use is stable from 20 to 60; body composition shifts	Building muscle and moving more	Does metabolism slow after 40?
Sleep	Sleep becomes lighter and more broken	Regular exercise modestly improves sleep quality; evening workouts are usually fine	Exercise and sleep
Hot flashes	A rise in body heat can tip off a flash	Trials do not show exercise reliably reduces them, or that it makes them worse	Exercise and hot flashes
Overall symptoms	Many symptoms at once	Yoga may modestly ease overall symptoms and insomnia, not hot flashes	Yoga for menopause symptoms

How to put it together

Strength comes first: work all major muscle groups at least twice a week, taking each set close to the point where another repetition would be hard. Add brisk walking or other moderate aerobic activity across the week, and some balance work. Any amount helps, and the least active people gain the most from small increases. Exercise works best with enough protein, covered in protein needs after 40. If achy joints are holding you back, joint pain in perimenopause explains why strength and low-impact aerobic work are the best-supported long-term approach.

Who should check first

Most healthy women without symptoms can start moderate exercise without a medical visit if they build up gradually. Check with a clinician first if you have heart disease, diabetes or another chronic condition, if you have new chest pain, dizziness or joint pain, or if you plan to jump straight into vigorous training. If you have osteopenia or osteoporosis, learn the lifts with a qualified trainer or physical therapist before loading up, and see osteoporosis prevention for the rest of the bone plan. The symptom check can help you prepare, and the directory lists clinicians who treat the transition.