It may be nothing more than a heavy, round object, but don't dismiss the medicine ball. Athletes and trainers have found numerous uses for the simple training tool, using it to strengthen stabilizing muscles in the core while being utilized to target muscle groups throughout the body.
The medicine ball also has a handy application when it comes to squatting. This isn't your traditional, bear-all-you-can squatting -- instead, this is a strategy emphasizing form and proper technique as the keys to true fitness, instead of overeager efforts to bite off more weight than you can chew.
Watch Travelle Gaines, the trainer for many pro athletes, demonstrate the right way to do it.