Within Gravity Spa, soft blue lighting and tranquil tones create an atmosphere that beckons visitors to relax and center their minds. Light and sound vanish within flotation tanks, where 10 inches of water saturated with 1,000 pounds of Epson salt create more buoyancy than a rubber ducky wearing water wings. The touted effects of this unique therapy are many, ranging from relaxation and a reduction in blood pressure to enhanced creativity and better sleep. Elsewhere in the spa, massage therapists provide a different type of relaxation in private sessions centered on deep-tissue, hot-stone, prenatal, and other massage techniques.