Thenics helps you to achieve impressive Calisthenics skills and functional muscles. There are a lot of trend sports (Street Workout, CrossFit) and Calisthenics Movements (Bar Brothers, Barstarzz) where you will see these skills. Skills: Muscle Up. Planche. Front Lever. Back Lever. Pistol Squat. Handstand Push Up. V-Sit. Thenics Pro Skills: One Arm Pull Up. Human Flag.