The v-sit hold is an isometric core exercise. That requires a degree of flexibility and core strength, however, you can make this exercise easier by bending your knees or by using your hands on the floor behind you to help with support and balance. Similar [...]
The up and down plank is a core exercise that mainly targets your abdominal muscles, triceps, glutes, quadriceps and lower back. To make this exercise more challenging, try adding a push-up. Similar Exercises to Try Push-up Plank to Push-Up Plank Frog Stand Skull Crushers Triceps [...]
The handstand hold is quite an advanced way of exercising your shoulders, it is therefore not recommended if you are not already in pretty good shape and have a high level of strength. To master this move you will need to be able to support your full body weight. [...]