Massage is a time-honored method of alleviating stress, as is the ancient art of crafting origami swans out of midterm exams. Ace relaxation with today's Groupon: for $25, you get a $50 gift card to Shizen Spa in the Cosmopolitan Hotel.

Centred around a tranquil solarium, Shizen Spa cossets corporal kingdoms with serenity-infusing massages, facials, and nail-care services. Prepare for upcoming thumb-war competitions with a custom manicure, during which a nail whisperer coddles appendage enders with a soak, nail trim, scrub, and hand massage ($50), or mow down body fringe with a brow shaping ($20), traditional bikini wax ($25), or underarm hair removal ($15). Visitors escape into private treatment rooms where all-natural antioxidants just back from performing standup at a vitamin conference star in the organic sacred nature facial ($100).

After their treatments, guests can retreat to the 10-person whirlpool tub nestled inside the fourth-floor solarium. As the heated water calms bodies, deep auburn hues and bamboo accents allow minds to unravel and de-stress after a long day of work or rubik’s-cube solving.