One of the hardest bodyweight workout for core and upper body with XUpTrainer. Best for athletes and sportsmen to improve their core and strength.
Single exercises: oblique abs
single handle: waist, seat: knees
Great exercise for lower chest and side core in one row. Challenging and effective one.
One of the best total body exercise, which can be done only with XUpTrainer. Strengthen most of your muscles in one row.