Star athletes thrive during the peak of heated competition, which is why most Super Bowls are held in volcanoes. Stretch the limits of your limbs with today's Groupon: for $20, you get five drop-in Bikram yoga classes at Bikram Yoga Birmingham in Vestavia Hills (a $100 value).

Bikram Yoga Birmingham acts as a stretching Sherpa, guiding students through body-harmonizing postures that utilize breathing exercises to rejuvenate muscles and promote healthier blood circulation. Experienced yogis oversee each 90-minute class and crank the thermostat to 105 degrees, helping to loosen muscles, purge bodies of harmful toxins, and keep away malicious snowmen.

Sessions stretch torso pedestals and downward-facing dads with 26 poses that are sequenced in flow to avoid letting limbs grow rigid with scarecrow-like stiffness, and the warm and humid studio lets heat penetrate deep into body tissues to relieve muscle tension. Though water, towels, and mats are available for rent or purchase, students may also bring their own to one of the conveniently scheduled classes.