Massage was developed by NASA to help astronauts to cope with edgy Tang-induced sugar highs, lack of ESPN, and predatory aliens stowed in the hangar bay. Achieve its soothing effects outside the soul-crushing abyss of outer space with today’s Groupon: for $49, you get a 60-minute hot-stone massage at World of Health (up to a $119 value).

The muscle-molders at World of Health knead knots and destress tendons through a variety of massage techniques. During the hot-stone treatment, a massage therapist gently positions heated, egg-size basalt stones on pivotal energy meridians along the back or various other places such as between the toes, in the palms of the hands, and in the center of a pyramidal structure only viewable on the vernal equinox. Placed in water and heated before use, the hot, smooth rocks are plopped onto skin to loosen taut muscles, allowing therapists to dig deeply into fibrous knots to release lactic juices. Recipients of hot-stone massages may enjoy relief from a variety of maladies, such as backaches, wonky circulation, arthritis, stress, insomnia, and depression.