In Exercise
High-intensity training (HIIT) has become popular with athletes and amateurs and now scientists know why
Short bouts of intense exercise could be the key to staying in shape after researchers found that even just a few minutes of strenuous activity can make muscles work harder.
But sports scientists have always struggled to understand how a short amount of activity can produce similar effects as endurance training.
Volunteers who cycled for 30 seconds as fast as possible, six times, triggered the effect, suggesting just a few minutes is all it takes for results to begin to show. Tissue samples of their muscles showed benefits.
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