Soccer players put their bodies through a lot, with lots of running and jumping. To stay in great shape, they need workouts that increase their endurance without putting too much strain on their joints. High-intensity interval training is a great way to do that. It mixes intense bursts of exercise with active recovery periods so you get fit without putting your body at risk. And it can be done anywhere there’s space to run, so you can squeeze in a workout no matter where you are or how much time you have.