This workout includes a fixed period of intense activity coupled with a fixed period of less intense or complete rest. Not only is it good for heart , but you can do this when you are running short of time.
HIIT increases metabolic rate and reduce resistance to insulin - and this helps you reduce weight not muscle.While the ideal workout time of HIIT is 5 minutes to 20 minutes , more than 30 minutes can cause overuse injuries.
Some popular HIIT exercise are side-lunges, alternating side lunges, mountain climbers, forearm planks.
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