I wish it had been my own creative thinking, but I came across a T-Nation* article by TC Luoma that made me laugh and made a great point. I think high-intensity interval training (HIIT) has its function in the fitness routine, but I believe its application is misplaced—at least the purpose is misapplied. I am, personally, not a fan of CrossFit, but it works for some. Luoma, however, chose to go after the “bastard” child of a “fermented paleo” drunken date between CrossFit and HIIT. I will modify Luoma’s words and call it Crosshiit (get it?).
Crosshiit is the haphazard mix of “short rest periods, randomly chosen exercises (but always including those stupid battling ropes, for some reason), indeterminate, pulled-out-of-their-ass rep ranges…” (Luoma’s words not mine). These are the workouts that are somehow dreamed up by some gym employee who rolled out of bed and, depending on the mood, scrawled a bunch of random exercised on the whiteboard under “WOD”. They are workouts make you sweat and feel like you did something productive—and, if you don’t get hurt, you might see some progress (though more often than not you won’t). Over the long-term, though, real progress is not likely.
Effective progressive overload must be planned and purposeful. The Crosshiit trainers seemingly have forget (or never studied exercise physiology to learn) the principle of “specificity”—i.e., the body system makes specific adaptations to imposed demands. Simply put, one’s training must match one’s goals. A trainer can use words like “metabolic conditioning” and not know what he is talking about. Crosshiit usually involves no significant resistances to build strength and hypertrophy, and, despite taking Tabata’s name in vain, the cardiorespiratory intensities are nowhere near sufficient to initiate a significant improvement in VO2max. (The body would literally break under the stress of trying to come anywhere near the Tabata IE1 intensity.) So, we are left with a workout that may or may not result in fat loss, has little benefit for muscle strength, muscle endurance, and cardiorespiratory fitness, and significantly increases the risk of injury. So, yeah, “Crosshiit” is a pretty good label.
If you are a recovering Crosshiiter or trying to escape the cult, there are alternatives with proper strength training and safe, effective, HIIT workouts (stick to the cardio machines or running, swimming, etc.). If you must, find a gym that offers planned, body weight or dumbbell/kettlebell, high-intensity interval resistance training (HIIRT) workouts as supplements to specificity training and are less Crosshiity. Use HIIRT to stimulate the fat-burning metabolism and weight-training for muscle strength/endurance/hypertrophy and cardio for, well, cardio.
Consider opportunity cost. If you only have limited time to exercise (as we all do), you don’t have time for a Crosshiity workout. Use your time wisely. Be goal-oriented and goal-specific.
Be your best today; be better tomorrow.
Carpe momento!
*https://www.t-nation.com/training/tip-avoid-this-dumb-workout-trend?utm_source=facebook&utm_medium=social&utm_campaign=article5041