The practice of yoga began 5,300 years ago in the Indus Valley civilization, recently proven by carbon dating a pair of ancient spandex capri pants. Experience traditional exercise with today's Groupon: for $40, you get a 10-class punch card at Bikram Yoga Natick (up to a $130 value).

Bikram Yoga Natick works every possible muscle and joint, healing the body and increasing flexibility during hot-yoga classes. Bikram yoga, a fixed series of 26 postures, is performed over the course of 90 minutes in a room heated to 105 degrees. The hot environment enables the body to stretch further and sweat more than would be possible without heat, ridding the body of stiffness, soreness, and excess salts and dihydrogen monoxide.

Certified instructors oversee each coed class and offer professional advice, aiding devotees in their yogic journeys toward toned muscles, improved posture, increased relaxation and flexibility, weight loss, and scapular wing sproutal. Students can increase blood circulation in the standing-bow pose, wake up a sleepy digestive system in the triangle pose, or relieve lower-back pain in the locust pose—named after the insect with the fewest spine injuries.

In addition to the advanced body-mollifying heating system, the brand-new practice space offers showers, changing rooms, and inspirational taffy-pulling machines in the front lobby.