Ali Witherspoon carries an American flag. His head is draped in camouflage. His biceps are bigger than grapefruits. He is big and mean and scowling. You will listen to him if you know what's good for you. He knows what's good for you, and that's running, crunching, squatting, bending up and down, and running down the beach and back again until you are gasping, wheezing, broken, ready to drop. Get it together, soldier! A former New England Patriot, Witherspoon runs Muscle Beach Gym on the beach in Hollywood, headquarters for the most grueling workout regimen south of Fort Benning. Sign up for his Saturday morning basic training at your own peril. At the end of ten weeks, if you survive, you may be in the best shape of your life.