FIT CLUB: Get ready for the next fitness trend. One of the buzziest names in fitness these days, Physique 57, is amping up its offerings with the launch of a new class just in time for awards season and spring wardrobe shopping. Come February celebrity clients like Emmy Rossum, Mary Louise Parker, Chrissy Teigen, Erin Andrews, Petra Nemcova and longtime devotee Norma Kamali can join the Physique F.I.T. or “Focused Interval Training” class. In a nutshell the class is a faster-paced version of a traditional Physique class with less stretching breaks and a focus on the arms and seat. Gravity and the use of two different sets of weights increase the burn factor and promise “Rockette-worthy legs in just a few classes” according to a source. Classes will begin Feb. 3 and be exclusive to the Los Angeles and Upper West Side location with co-founder Tanya Becker leading the class.