Plyometrics is a general term used to describe hopping, jumping or bounding exercises. These are strength exercises which work specifically on the leg muscles. They are particularly good for sprinters, as they also increase the speed at which your leg muscles contract, which helps you to run faster.

To try plyometrics, you could hop, jump, skip or bound for 20m, building up to 30m as you improve. You should do two or three repetitions of each exercise.