Imagine being able to choose how you felt, or reduce stress, on-demand. Apollo promises exactly that. The result of years of research by physicians and neuroscientists at the University of Pittsburgh, the clinically validated device uses gentle, rhythmic vibrations to help adjust heart rate variability, a key metric in health and recovery, via the sense of touch. A companion app provides access to modes supporting focus, meditation, sleep, energy, recovery, and relaxation, with further adjustments for duration and intensity of the vibrations. The device is available in a dark gray Stealth or silver color and can be worn on the wrist or ankle, with bands supplied for both.