Kristin Watson says workouts at Purvelo, her new spinning studio in the Ix building, are “totally about you, and what you need out of the class.” Photo: Amanda Maglione

Spin city: Purvelo brings intense cycle workouts to Ix

“The red knob controls your destiny.” That’s what Kristin Watson reminds all her new clients as they nervously clip themselves into an exercise bike for the first time after watching the previous class leave, jelly-legged and drenched in sweat. And she’s not exaggerating. Those little red knobs, which sit below the handlebars and turn to […]