Are there any good 12min workout routines?... | 2017-01-14 20:29 UTC

HIIT improves performance through short exercise sessions and involves alternating short, fast bursts of intensive exercise with slow, easy activity. An HIIT session involves a warm-up interval, followed by several short, maximum-intensity efforts separated by moderate recovery intervals, and finally a cool-down interval.

By Anonymous Submission on 2017-01-14 20:29 UTC
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