DAREBEE Workout: What it Works
Push & Pull Express uses gravity and the body's weight to exhaust upper body muscles quickly and lead to the kind of physical changes that deliver real strength. If you have a handy chin-up bar and some floor space, you've got yourself the kind of workout that becomes the target to beat. This is a Level IV workout, not suitable for beginners.  
Extra Credit: Do at least 5 pull-ups each time. 
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