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Think More Cardio Means Better Results? Smarter Training for Longevity & Body Composition Women 40+

Dr. Stacy Sims Official

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Should women in their 40s and 50s focus on cardio, or resistance training? In this conversation with Andrew Huberman, Dr. Stacy Sims explains why moderate-intensity workouts like spin classes and endless jogging may actually harm body composition, spike cortisol, and stall longevity goals. Learn the real science of resistance training, true high-intensity intervals, and simple ways to start strength training safely, even without a personal trainer.

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👩‍🔬 About Me:
I’m Dr. Stacy Sims, exercise physiologist, nutrition scientist, and author of ROAR and Next Level. My mission is simple: stop training women like small men. I help you understand and work with your physiology - for better performance, health, and longevity.

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20 Comments

@doris3594 1 year ago

67 year old here and I got my start with Apple fitness + two years ago. Started with senior starter videos and moved to full strength training and treadmill workouts and the trainings have options for lighter workouts. The resistance is with free weights. Lots of full body workouts that are fun and affordable. Dr. Sim was a huge inspiration for this. Creatine helps too. My arms have muscles that I’m proud to display.

@MISJPEREZ 1 month ago

as an over 50 woman with little means I have to bike to work and bus home. No choices. I am taking in more protein as suggested and its helping.

@SohamGadakh-f9h 1 year ago

Many thanks

@olgalcorona5628 8 months ago

We need more videos like these ones. Please 🙏

@n1gamer132 1 year ago

So good , all the best for you

@adventurecats4816 9 months ago

I've strength trained since my teens (63yof) and it has always been my go-to base for fitness. My Mom, 85yo, has always led an active life as in renovating houses, landscaping etc, but figured that was plenty of strength work. She's not wrong. But I've tried to get her to do 2 weight sessions a week for joint and bone strength for 20 years, now she's wishing she had listened ☹️

@west_coast_elle 1 year ago

The full video is fantastic! 💪🏽

@LeliT-w3y 7 months ago

Love this..I am transitioning well, thank you.

@NovasYouTubeName 1 year ago

Oh my gosh my two hero’s together!!

@toreilly100 9 months ago

Yes Yes!!! Finally real advice!!

@katerina9894 1 year ago

Dr Sims what is your opinion on the Japanese Walking Method, an interval walk that alternates between 3 minutes of gentle walking and 3 minutes of fast walking, 15–30 minutes, 3–5 times a week? For women over 40 and 50. Thank you❤

@olgabest445 2 months ago

Dear Dr Sims, so greateful to you for your invaluable knowledge and expertise you share with us! I'am 52, did a lot of cardio all my life. A couple years ago instinctively understood that I need workouts with weights. Started at home and now is going to proceed in gym. Besides, tried 30 seconds sprint today with 2 minutes relax, really was about to throw up😂 But what a wonderful feeling was afterwards! Lots of energy! My huge thanks to you!❤

@AOC120 4 months ago

I am craving for information on fitness for women in their mid-sixties and beyond. Please cover this age group, we love working out and need the guidance. Thanks for being out there, speaking to women about what women really need.

@lizetjames 1 year ago

What about insanity max 30...?? Would that be OK for peri menopause?

@benjamindenny9154 1 year ago

So useful , I enjoyed watching this

@faridabrouwer8932 1 year ago (edited)

Is there any coach or gym in Barcelona, Spain, who has been trained to Dr Stacy's approach? Thank you 🙏🏻

@melimel7568 6 months ago

Is there something that show what I should be doing? I'm confused and I want to work out at home.

@sls275 5 months ago

Your heart is a muscle too. I do strength twice a week. One session per muscle group. Are you saying one zone 2 per week max and the other cardio should be HIT or SIT?

@Kristin-1111-f7i 1 year ago

I have a question, I'm in perimenopause and I'm a big fan of your videos. I've tried strength training and unfortunately I have a bad back form a history of gymnastics earlier in my life (I've done chiro, physical therapy etc). I've tried many times, but I'm not able to lift heavy as it results in a lot of back pain. Can I still get good results with lower weights as long as it's still part of that resistance training? Thanks!