Lithe Cinch

Hoping to erase—or at least shrink—that post-baby bump? Head to Lithe’s Cinch class, during which haramakis (belly bands) worn around the waist help new moms focus on their core while keeping the entire midsection compressed during an hour of transformative bar and mat work. You’ll tighten, tone and slim the entire area between the ribs and hips. Screw you, mom jeans.