Voorhees’s Versa Fit Studio is famous for its fat-burning, skin-smoothing “Vacu Fit” ellipticals and treadmills. It also offers Pilates, spinning, tae kwon do, zumba and ballroom dancing, as well as flexible, pay-as-you-go pricing. This month Versa expands across the river to Center City, with no membership fee, no contracts, and no, as they say, excuses. 1529 Walnut Street, 215-564-0770, versafitstudio.com.