In the Victorian era, people made their cores look tight by wearing corsets, which doubled as bulletproof vests during pistol duels. Strengthen your core until it's naturally impervious to bullets instead with today's Groupon: for $29, you get three accessory classes at Lead Pilates and Wellness (a $60 value).

Nominated for the 2010 Celebrate Success! award, Lead Pilates and Wellness offers a distinctive blend of Pilates and wellness programming to mould muscles and tone tendons in a newly renovated 2,300-square-foot studio. Today's Groupon is good for three accessory classes, which include Essentrics & TRX Circuit, a class designed to trim problem areas while increasing flexibility and agility, and the suspension-focused TRX & Restore classes. Grouponers can also check out the torso-lengthening Restore & Rejuvenate sessions, the Kick Abs Bootcamp, and Strengthening Your Evil Core, a Pilates class for supervillains. Check out the schedule online.

Each integrated workout helps students build long, lean muscles without straining joints or relationships with postmen. All of Lead's encouraging instructors have been whisked and whipped into teaching shape through the Pilates Core Integration (PCI) Teacher Training program out of Tempe, Arizona.