Surely you've seen him. That guy, dressed in camouflage pants and combat boots who's doing squats on Fort Lauderdale Beach with a bunch of sweaty "recruits" in tow? That's the 53-year-old Health Colonel, a.k.a. retired Army Col. Bob Weinstein. Never have we met a man so in love with exercise. When he lets his students take a break from doing 100 pushups or lunging down the sand in a maneuver called the "Death Walk," he says, "Go get some water." But if they linger too long, he faux-barks, "This isn't happy hour!" before breaking into a grin and saying, "Oh wait... yes it is! It's always a happy hour when we are making our bodies healthy!" On his website, www.nomorecrybabies.com, the colonel writes about his quest to "fight the enemy soldiers on American soil" -- like heart disease and obesity. But on the beach on Wednesday nights and Sunday mornings, he doles out inspirational quotes, dispenses advice to the lovelorn, and leaves his troops laughing -- and buff.