HIIT (high-intensity interval training) incorporates intense periods of work with short recovery segments allowing participants to maintain workout intensity without sacrificing form. Intense circuits also stimulate muscle-building hormones, putting the body in a perfect state to build lean mass.

This type of training develops the cardiovascular system and strengthens the heart. By pushing the heart rate high during the active intervals, participants increase their cardiovascular capability, supporting faster recovery in future workout sessions.

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