"To perform a repeated vertical jump, start by standing with your feet shoulder-width apart," Woodhouse explains. "Then, squat down as though you're going to sit on a chair, and then jump up as high as possible, using your arms to drive you upwards. When you land, immediately repeat another jump, doing this for a total of ten times. Keep the landings nice and soft, bending your knees on impact. This is a great exercise for pushing and accelerating, which is important for rugby players who have to find sudden speed at multiple points throughout the game."