40ft. Alligator crawl vs. hollow rock/ hold*
:20 Airdyne sprint vs. isometric squat**
Each piece is 10 minutes, with 1 minute rest between.
*With a partner- while one is crossing the floor using alligator crawl, the other is holding a hollow position.
**With a partner- while one is sprinting, the other is holding a below-parallel squat with excellent posture.