• The mountain climber is a challenge for the entire body , especially if you do it fast enough to act as a cardio workout .
• A mountain climber is basically a plank where you run on the spot .
• If you value efficient moves in your strength-training workouts , mountain climbers are a perfect fit .
• Mountain climbers are a killer exercise that get your heart rate up fast while also firing nearly every muscle group in the body .

said when there are too many people involved in trying to do the same thing, so that the final result will not be good