Welcome to the Science of Human Performance Series where we are breaking down the key metric for you to improve your fitness. This week, we’re unpacking Strain with WHOOP Global Head of Human Performance, Principal Scientist Dr. Kristen Holmes and WHOOP Staff Research Scientist Dr. Greg Grosicki. Together, Dr. Holmes and Dr. Grosicki explore how both cardiovascular and musculoskeletal load are taken into account when measuring a member’s daily strain to help balance training, recovery, and build long-term fitness. The conversation explains the influence of WHOOP Strain on overall fitness goals, from improving fitness to supporting weight management, and increasing VO₂ max. This episode will give practical guidance on your training routine, helping you build the habits necessary for performance, healthspan, and longevity.

(00:00) Looking To Gain Fitness? WHOOP Strain Can Help

(01:25) What is Strain?

(02:07) How Does WHOOP Measure Strain?

(03:21) What Is The Neuromuscular System – Why Does It Matter For Strain?

(03:57) How Does WHOOP Measure Musculoskeletal Load?

(08:09) Creating Impactful Strain Recommendations: WHOOP Coach

(11:16) Exclusive Offer For WHOOP Podcast Listeners

(11:50) Why Is Strain Measured on a 21-Point Scale?

(16:37) The Power of Consistency: Improving Fitness By Following Strain Coach

(23:21) Refer A Friend: Get 2 Months Free!

(23:56) Is Strain The Biggest Lever For Improving Cardio Health?

(24:57) How To Improve Strain (Habits For Busy Individuals)

(27:03) Focussing on Heart Rate Zones