HIIT is an acronym for High Intensity Interval Training. Research shows that HIIT can help you lose weight, lower blood pressure, and more -- all in less time than traditional workouts. Check out this overview, plus 3 routines to get you started with aquatic HIIT workouts.
"My racing days may be done because of my lower back," says Cameron L., a seven-time IRONMAN World Championship triathlete. Fortunately, he can still swim! The Original Endless Pool that he trained for triathlon in now helps to strengthen his back .