Why Try Interval Training Workouts? Quick Results
If you're looking to rev up your fitness routine, interval training may be your ticket. You can get more out of that spin class, run workout, or lap swim by alternating short bouts of high-intensity exercise (yes, you have to work hard!) followed by a few minutes or seconds of rest. By doing this, you stress out your cardiovascular system and build up lactic acid in the muscles—which boosts body fuel, strength, and stamina—while then letting yourself recover and prepare for the next tough interval.