Shondelle Solomon-Miles, AKA "Coach," has a body as impossibly skinny and taut as Iggy Pop's, a look as fierce as Nicki Minaj's, and a way of making you obey that's like Mom when she means business. Coach's B.A. from Columbia University and master's degree from the University of Miami don't hurt either. At her gym, Synergize, she follows the standard Crossfit methods of team workouts consisting of hard-core, old-school moves like jumping jacks, dead lifts, burpees, sprints, and the terrifying-sounding Turkish get-ups. Whereas other Crossfit gyms can feel too aggro, Solomon-Miles has a winning supply of motherly warmth: Eat foods that are "supportive," she says; push through your fears, she guides. There's also her no-bullshit, get-it-done, drill-sergeant toughness. Men and women alike, she will work you — and then make it all better with a smoothie from the juice bar at the end of class. True, the price ($159 to $199 per month) is steep, but the results are undeniable.