CNN reports of a few interval workouts to avoid HIIT burnout or injuries.
High-intensity interval trainingFor many people aiming to burn a lot of calories, high-intensity interval training is the way to go.
Also known as HIIT, these popular workouts feature bursts of intense activity, such as squats or lunges, followed by recovery time. A HIIT routine can torch more calories than a traditional endurance workout while being performed in a shorter amount of time. Numerous...
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