Vogue named him one of the “most sought after trainers in America”: he has a client list peppered with Boston’s beautiful people, and his state-of-the-art gym is more Philippe Starke than YMCA grunge. But don’t let appearances deceive you: Berke’s a task master who realizes people do not want to be sweating their buns off, doing the same old grunts seven days a week. Gym rats addicted to StairMasters, aerobics, and other such standard pursuits be warned: Berke will have you jumping rope, spinning, and taking part in high-intensity weight training. He will also create an individually tailored diet regime, which can include two glasses of red wine a night. $75/hour.