Nothing amps up a workout and keeps boredom at bay like interval training. Since it doesn't require any special equipment, it's easy to incorporate into a regular fitness routine.
Interval training is simply alternating intense exercise with less strenuous activity in the same workout. Depending on the length of the session, more intense activity may last just 30 seconds or several minutes. The pace and frequency of heavier exercise depends on individual fitness and endurance. At any level, though, switching things up results in greater benefits.
Serious athletes have known this for a while now, and they wouldn't exercise any other way. Here are six reasons why you should take up interval training: