Yoga, like sword ownership and sleeping, is an ancient practice whose benefits are just now being appreciated. Reap the rewards of ancient ways of life with today's Groupon: for $39, you get 10 yoga classes (up to a $108 value) at Renew Yoga.

Renew Yoga's certified teachers help students strengthen their cores, perfect their postures, and focus their minds in a variety of group classes. Beginners' yoga builds a strong foundation at a relaxed pace, paying special attention to proper technique, alignment, and breathing. Barkan-method warm Vinyasa simulates a summer afternoon in Calcutta with a heated room, abundance of dynamic poses, and the occasional rickshaw relay. Students of all levels can relax away stress with gentle yoga, and yin yoga encourages them to hold poses for extended periods to develop deep-tissue strength and empathy for stone gargoyles. Classes are generously scheduled throughout the week in the morning, afternoon, and evening hours.

The studio at Renew Yoga is as pleasing to the core as it is to the corneas. Paper lanterns, gleaming wooden floors, and energy-efficient light bulbs light the way to bliss within, and low-emission paints and recycling bins infuse the space with good karma—karma that prompts visitors to perk up, smile, and call their most beloved relatives and congressmen.