Year Long Workout: Phase IX, Workout A
2C Swiss-Ball Knee Drive
Sets: 2-3 Reps: 15 (each leg) Tempo: 111 Rest: 60 Seconds
Get into pushup position with your hands on a Swiss ball. Raise one leg off the floor and drive it up until it touches the ball . Return to the starting position. Repeat with the other knee . That's one rep.