HIIT is often associated with some form of “4-minute fat burner” workout, which IS NOT what I am talking about.
HIIT workouts consist of repeated bouts of high-intensity work performed above the lactate threshold (a perceived effort of “hard” or greater) or critical speed/power, interspersed by periods of low-intensity exercise or complete rest.
HIIT has the benefit of adding speed to your training without adding much fatigue when compared to traditional interval training.
Research shows that completing a workout of 3x {13x 30sec ‘fast’ - 15 sec ‘easy’} can increase your workout time above VO2max by an average of 54% when compared to traditional long intervals (4 x 5 min work-intervals, 2.5min rest) (Almquist NW, 2020).
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