Other benefits of interval training include: improving your speed and stamina, burning tons of calories, and best of all, it isn't boring. Sure, you're still stuck in the same spot on the treadmill for the same amount of time, but switching up the speeds makes it a million times more interesting, and with the warm weather here, it's also a great outdoor workout! I invested in a pocket-sized stopwatch to time my jog, sprint, and walk times while I’m outside. If you're into sports like soccer or lacrosse, which involve intense spurts of sprinting followed by more leisurely jogs and walks, interval training is for you. If you're into more calming activities such as going on walks, or practicing yoga, you may be a bit overwhelmed at first. For me, intervals have lived up to the hype and are lots of fun!