PLYOMETRICS

Plyometric jumping can take your running training to a new higher level but you have to be ready.
This means:
- being able to squat at least half your body weight and ideally more than just half
- you are able to run a 10K, without struggling too much.
The American Council on Exercise has some sound, cautious advice about plyometrics.
Donald Chu has some excellent detail on how to improve your running performance by adding plyometrics to your training.