Calisthenics is the art of using your own bodyweight as resistance. It's how gymnasts build incredible strength, and it's completely free. To build a full-body calisthenics routine, you only need to master four fundamental movements: 1. The Push (Push-ups, Dips) 2. The Pull (Pull-ups, Bodyweight Rows) 3. The Squat (Bodyweight Squats, Lunges, Pistol Squats) 4. The Core (Planks, Hollow Body Holds) Start with the easiest variations of these exercises. Can't do a push-up? Start on your knees or against a wall. The beauty of bodyweight training is that it scales perfectly to your current fitness level.