Inchworm to Grasshopper. With a little cardio and a lot of toning, these babies firm your entire upper bod from front to back. Stand straight, bend toward your toes, and walk your hands out into a push-up position. Keeping your arms and shoulders stable, jump and bring each shin to the opposite arm.
Can't get a good back workout without equipment. At least not without a pullup bar. NOT SO. Hit your upper.
No time to work out your back? These bodyweight back exercises take only 5 minutes. The best part is you can do them at home without weights or equipment.