Yoga challenges the mind and body without the violence and hurt feelings of full-contact chess. Steer clear of overaggressive pawns with today's Groupon: for $25, you get 20 yoga or Zumba classes at Underground Yoga in Huntington Beach (a $240 value).

Behind Underground Yoga's industrial rollup door, students of all fitness levels hone strong bodies and minds during power yoga and Zumba classes. The studio’s 7-day schedule takes place amid black-and-white cityscape murals and colorful graffiti, a stylish, urban setting for instructors to lead yogis of all skill levels through empowering yoga and fat-burning Zumba dance classes. Yoga sessions walk students through basic yoga poses to bolster cores, stretch muscles, and test the limits of the studio's complimentary towel service. Zumba workouts take a party approach to fitness, featuring upbeat Latin tunes, which students accompany with easy-to-follow steps inspired by dance styles such as cha cha, salsa, and rumba.