SPRINTS
- As you get in better shape, you will find that your heart rate comes down faster, and you will be able to do more sprints in 30 minutes.
- This can be done on a treadmill as well.
- If you have access to a beach, make it really tough and run your sprints in the sand.
Sprint, then rest until your heart rate comes down. Repeat as many times as possible for 30 minutes.