For some people trying to lose weight, they might find that they've plateaued and wonder if there is anything they can add to their workout routine to jumpstart their metabolism. Enjoying a high-intensity interval training (HIIT) workout a handful of days per week can be just the thing that works.

“If you’re looking to be more explosive, athletic or build muscle, HIIT workouts are best suited to help you do that,” Rafique “Flex” Cabral previously told TODAY.com.

Trainer Tip of the Day: HIIT Workouts 3 Days a Week Boosts Metabolism

A HIIT workout focuses on brief moments of super-intense activity with rest periods sprinkled between the exercise. While the high energy exertion occurs in quick bursts — often 30 to 45 seconds, with rest in between — it demands more of the muscles. This ty

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