If you really want to challenge yourself physically and mentally, signing up for an Ironman triathlon is the way to go. This mutli-sport competition involves three astounding events: a 2.4-mile swim (77 laps), a 112-mile bike ride, and a 26.2-mile run. Whether you're training for a triathlon or just want to switch up your cardio routine, Sugar user mamasitamalita had a brilliant idea.
Complete a mini triathlon inside at the gym. Spend 15 to 20 minutes in the pool, then move to the stationary bike for same amount of time, then hop on the treadmill for the last leg. Or you can change up the "events" and use the stair climber, the rowing machine, or the elliptical. She says, "It's an especially good way to get back in shape if you haven't worked out in awhile." Not only is it a good idea to do at least three types of cardio throughout the week, but it's even better to do three different types in one workout. Thanks for the idea!