2. Car Washing
Why it works: Another signature part of Mr. Miyagi’s program was car washing and waxing. Both strengthen the stabilizing muscles in your shoulders and promote rotational movement. They help open up your shoulders, which tend to hunch over and round from hours spent slumped over a computer and smartphone.
Keys to success: Wax on, wax off. Don’t just wash and wax in one direction, go clockwise and counterclockwise to work the shoulders across all three planes of motion.
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