Is HIIT Bad for Menopause? The Truth About Intensity

Papayya's Team

October 7, 2026

It is starting to become a trend on menopausal women to think that, because you’re dealing with this new phase of your life, you need to stop strength training altogether. People tell you to stick to walking, or yoga or gentle cardio and, although the advice may be caring, it is totally false.

What’s the reason for this?

Perimenopause is already a stressful time for the body. Exercise is also a stressor, so adding a hard workout to a body that is already stressed seems like a bad idea.

Dr. Stacy Sims agrees that perimenopause can act like a form of chronic stress due to the fluctuation of hormones that push your body towards a “fight or flight” stage.

A cortisol spike is not the same as a problem

Cortisol mobilizes fuel and keeps you alert. Its levels rise and fall naturally throughout the day. And even so, creating short stress, like working out, actually makes you more resilient. The trouble begins when chronic stress comes from poor sleep, heavy life demands, chronic dieting, low energy intake or overtraining.

Intensity also behaves differently from what most people expect. Short and heavy efforts like HIIT or SIT can spike cortisol sharply, but those spikes only drive positive adaptations. Dr. Sims states that women respond especially well to a bigger growth hormone and insulin response to sprint training.

Then there’s the long-term aspect of it. In Sims research, regular moderate-intensity endurance exercise tends to raise circulating cortisol over time, while high-intensity interval training (HIIT) actually lowers baseline cortisol, which is the opposite of the general agreement.

HIIT vs SIT: why the difference matters

People often use the two terms interchangeably, but in fact they are different workouts.

According to Sims, HIIT uses effort from 45 seconds to a few minutes at roughly 85-90% effort, usually with equal work and rest. SIT uses shorter all-out sprints of 20-30 seconds, with longer recoveries of up to 3-4 minutes.

For midlife women, SIT can be easier to manage. The efforts are very short and the rest is generous. The benefits, according to Dr. Sims are: better VO2 max, a stronger heart, better insulin sensitivity, recruitment of fast-twitch muscle fibers and hormonal signals that protect lean mass and bone density.

What research says about metabolic health

Body composition: In a trial of 40 postmenopausal women, sprint interval training increased total lean mass, decreased fat mass and improved aerobic fitness after only 8 hours of exercise. Study reports show gains of about 0.7kg of lean mass and a 0.4kg drop in fat mass over 8 weeks.
Abdominal fat: In a trial with postmenopausal women with type 2 diabetes, visceral fat fell about 24% in the HIIT group. We need to note that the group was small and had diabetes, so this study cannot be applied to everyone.
Insulin sensitivity: In 48 postmenopausal women, 10 weeks of high-intensity concurrent interval exercise improved insulin sensitivity and reduced all kinds of abdominal fat.

The only real limit is that these studies are small and use different protocols. Some of the strongest cortisol arguments come from Sims’ own interpretation of the literature, not from large trials. Dr. Sims also notes that the mood and brain health benefits of HIIT appeared less pronounced in post menopausal women than in perimenopausal women in one study.

How to use SIT without overdoing it

Strength training as the foundation: Sims describes heavy resistance training as crucial for maintaining muscle during menopause. She suggests plyometrics and explosive movements to help preserve bone density. Sprints add to the lifting.
Sprint work short and infrequent: HIIT no more than twice a week, with about 30 minutes including warm-up and cooldown.
Try a simple starting session: Sims’s example SIT session is 5 rounds of 30 seconds all-out with 2-3 minutes of recovery.That is about 2min30s of hard work in total.
Replace, don’t add: Sims suggests swapping one or two steady-state sessions for HIIT or SIT and pairing intensity with recovery because that is when adaptation happens.
Watch the stress budget: Intense exercise needs to fit into your life. If you’re sleeping badly, under-eating or already overwhelmed, scale back.

Why guidance matters

The gap between “SIT works” and “SIT works for me” is usually technique, pacing and consistency. Many women go too hard in week one and then abandon it, warm-ups get skipped, rest periods get cut short and joints that have changed with lower estrogen don’t always get the attention they need.

At Papayya, training is delivered by certified trainers over a video call, with real-time form correction and sessions that always begin with a thorough assessment of posture and cardiovascular fitness to set a baseline. When it comes to sprint work, this means that someone can check your mechanics, adjust the effort to your current fitness, keep rest periods honest and decide whether you should sprint, lift or recover.

The Bottom Line

HIIT isn’t automatically bad for menopause and neither is automatically good either. Long, moderate sessions may be the less effective choice, while short, well-recovered sprints combined with heavy strength training are a strategy with real physiological agreements, even with developing research