This is the instructional & follow-along video for the 2024 X40, a progression from X34 (return to that if needed). See companion PDF's for workout ouline and training calendar. Please ask an y questions & make your post-workout report in the comments section below.

https://www.intervaltimer.com/shared/1OrMYzVRH08lpH2h70Cx-45-15-Unilateral-Circuit