—Place a weighted bar across a bosu ball or balance board.
—Get into a pushup position, feet shoulder-width apart, and grip the bar with your hands, just outside where the ball or board ends.
—Keeping your arms at a natural 90-degree angle, perform a pushup.
Suggested Reps: Start with five; add two more reps each following week.
Mims says: “This exercise is effective at teaching you how to steady yourself, which prepares you to pop up on the board—or get back on the board if you fall in the water.”