Spines are fickle beasts, easily irked by day-to-day situations such as slouching over a keyboard or being stepped on by a rhinoceros. Put an out-of-whack support beam back in whack with today's Groupon: for $15, you get a 30-minute hydro-table massage and an optional digital spine analysis at Mid-America Spine & Rehab, located in Des Peres (up to an $88 value).

The vertebral virtuosos at Mid-America draw from a physical-therapy mindset to remedy sources of spinal discomfort and boost patients’ overall health. During the hydro-table massage ($35 value), water jets volley aqua streams to relieve back muscles of tightness and improve general joint mobility without wetting patients' shirts or temporary tattoos. Back repairees are then free to enlist one of Mid-America's trained professionals to perform an optional digital analysis of their spine, which peeks at patients’ bone buttress for mechanical faults, potential health issues, or missing Jenga pieces.