The Core Stability lessons focus on training your core, but also your arm and leg muscles. The lesson starts with a warming-up, mainly comprising a range of different lunges. After the warming-up, you start on 2 or 3 blocks of 6 and 12 minutes, in which you alternate between various exercises to train your back and abdominal muscles, and exercises for your leg and arm muscles (e.g. jumps and press-ups). Most of the exercises last between 45 and 60 seconds. The lesson finishes with a cooling down session.