Sprinters can easily and quickly increase their speed by adding targeted workouts for their hamstring muscles. To begin, start with a traditional leg curl. When you begin to pull the weight lower, however, concentrate on flexing your feet and toes away from your body. This simple step increases the workload on your hamstrings.

Avoid using the words "workout" or "exercise" for your fitness routine. If you call it by these things, you are more than likely not going to be as…