high intensity interval training

High Intensity Interval Workouts For Dummies

WHAT IS THE BEST HIIT WORKOUT? Lately, I’ve been focusing on metabolism-boosting exercises. I’m getting close to 40. I want to keep burning fat and stay toned to avoid muscle loss. But I’ve also been thinking a lot about cardio. I want to keep my heart healthy. We’ve all been hearing about HIIT, High Intensity …

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