What is HIIT and how do I use it in my training? - Fitness Blender Can Be Fun For EveryoneAt 30 seconds, if you've finished the calories, both you and your partner get to rest. If you haven't, your partner does squat reps for every calorie you...
What is HIIT and how do I use it in my training? - Fitness Blender Can Be Fun For EveryoneAt 30 seconds, if you've finished the calories, both you and your partner get to rest. If you haven't, your partner does squat reps for every calorie you...