Uploaded August 2026 | Updated September 2026, 1 week ago

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Should women really be training on an empty stomach?

Dr Stacy Sims (@DrStacySims ) explains why the popular “black coffee → fasted workout → breakfast later” routine may affect women differently from men, and why applying the same nutrition advice to both sexes may be a mistake.

In this clip, Dr Sims breaks down the science of fasted training, cortisol, circadian rhythms, female hormones and muscle recovery. She also explains what women can eat before an early-morning workout, even when they don’t feel hungry, to better support training, recovery and performance.

Dr Stacy Sims is an exercise physiologist and nutrition scientist whose work focuses on female physiology, training, nutrition and performance.

Watch the full conversation for more on women’s health, exercise, menopause, nutrition, creatine, cold exposure and the science of female performance here: youtube.com/watch?v=6SNqawcU9SU

Connect with Dr Sims below:

Stacy's Website - drstacysims.com/?utm_source=oct25_doaceo&utm_medium=social%20&utm_campaign=youtube

Stacy's Newsletter - drstacysims.com/generic_optin?fbclid=PARlRTSANILGpleHRuA2FlbQIxMQABpzetHy9bGPAbiIyf5bpi_gTlXv3lJ0C4fJ3xjBt3t4Dk49H1KnUfSIbXncFT_aem_rAtOFBtNDqeU61t6_d7VyA&utm_source=oct25_doaceo&utm_medium=social%20&utm_campaign=youtube

Stacy's Product Guide - drstacysims.com/product_guide?utm_source=oct25_doaceo&utm_medium=social%20&utm_campaign=youtube
Stacy's Blog - drstacysims.com/newsletters/articles?utm_source=oct25_doaceo&utm_medium=social%20&utm_campaign=youtube
YouTube Channel - youtube.com/@UCPD55VPa1ZWx1a_nzWC2VJA
Instagram - instagram.com/drstacysims
LinkedIn - linkedin.com/in/stacy-t-sims-phd
Facebook - facebook.com/drstacysims

Connect with us:
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#StacySims #WomensHealth #FastedTraining #FemaleFitness #ExerciseScience