CORRECT:
INCORRECT (you can CLEARLY see both participants could be slamming the ball harder):
Just make sure you use an adequate (concrete/brick) wall so THIS doesn't happen:
Also, make sure you give yourself enough room so THIS doesn't happen:
PC Conditioning is an individually owned and operated personal training and nutrition consulting service based just outside of Boston, MA. Founded in 2006 by NSCA Certified Personal Trainer Paul Connolly, PC Conditioning provides the finest methods of strength and conditioning based on an individual’s goals and needs analysis.
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