Sprints

Sprinting is the most time-efficient conditioning tool there is. Short, all-out efforts followed by recovery build anaerobic capacity and burn a lot of calories in a little time, and, unlike endless steady cardio, they do it without eating into your strength. On a treadmill you control speed and incline precisely, which makes sprints easy to program and progress.

How to Perform

1. Warm up thoroughly first, at least 5 minutes of easy jogging plus some dynamic leg swings. Cold muscles and sprints do not mix.
2. Set your work interval (commonly 15-40 seconds) and bring the treadmill up to a speed that is genuinely hard by the final few seconds.
3. Run tall: eyes forward, chest up, arms driving from the shoulders, feet landing under your hips.
4. At the end of the work interval, step onto the side rails or drop the speed to an easy walk or jog for your recovery.
5. Repeat for the prescribed rounds. Stop when your form breaks down or you can no longer hit the target effort.

Tips

• Effort is personal; use an RPE (rate of perceived exertion) of 8-9 out of 10 rather than copying someone else’s speed.
• The recovery matters as much as the work. Go easy enough that you can attack the next interval.
• Progress by adding rounds, shortening recoveries, or raising the speed, not by making every session longer.