Like an iceberg, beauty mostly resides below the surface, but only its visible portion can gain the attention of an ocean liner. Look shipshape with today's Groupon: for $39, you get one 75-minute Sudatonic cellulite treatment at Tranquility Day Spa in Corona (a $79 value).

At Tranquility Day Spa, Sudatonic treatments cocoon clients in blankets that radiate infrared heat to help break up cellulite and detoxify the body. To begin the treatment, technicians spread cream along target areas of the body and wrap customers in a warm space blanket that summons greater powers of circulation and Martians who enjoy arts and crafts shows. As the blanket raises core body temperatures, the topical cream suppresses sweat, forcing fat cells to release fatty acids for energy. Light lymphatic massage stimulates waste disposal, flushing away fat and helping nutrients reach the skin's surface. As the body detoxifies, bunched groups of cells diminish in size to decrease the appearance of cellulite, help clients lose weight, and create limbs as smooth as a seal swimming in a pool full of Crisco. The treatment's therapeutic heat can also soothe muscle tension and pain brought on by minor injury, arthritis, and joint pain.

Though Tranquility Day Spa sometimes features a discounted price online, this Groupon still offers the best deal available.