1000 Calorie HIIT Workout ( No equipment) I DARE you to try this

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Check out my 6 week fat loss challenge The shoes I like to train in: your engines To complete this workout do Part 1 (20 min), followed by part 2 (20 min) and then repeat part 1 ( 20 min). I am using the gymboss interval timer AP for Iphone. It s free. Part 1: 40 se