Getting ready to hit the gym in January? Here's your starter pack of all the information you need to walk into the gym with confidence and build a habit that will last all year long.
Tagged With treadmill
Normally you do sprint intervals on a moving treadmill by alternating between rest and running at its fastest setting, but try this advanced twist: leave any treadmill off, and use your own two legs to power the belt for an incredible sprint workout.
