Looking for a way to boost cardiovascular endurance, burn fat, and boost metabolism in less than half an hour? Try running intervals - alternating high-intensity cardio with walking and jogging keeps the muscles (and brain) in shape, in just a few minutes.
Do it Today: Intervals can improve speed and endurance for beginner, intermediate, and even advanced runners.
Run with Us:
Sign up for Greatist's virtual 5k, taking place on July 31, and receive a free 5k training guide.
Running intervals can rev up metabolism - score!