Why HIIT Changed Everything

The Science Behind the Sweat High-Intensity Interval Training didn't just change the fitness industry — it rewrote the rules. For decades, the conventional wisdom was simple: more time equals more results. Run longer. Cycle further. Spend an hour on the treadmill and hope for the best. HIIT threw all of that out. The research is overwhelming: short bursts of maximum effort followed by structured recovery periods deliver more metabolic benefit in 30 minutes than most people get in 90 minutes...

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