Part of Therapy Services Plus and named for its location above it, Yoga Upstairs elevates visitors’ spirits and fitness levels with accessible Hatha- and Iyengar-style yoga classes, as well as basic, gentle, and Vinyasa flows. Sunlight warms the bamboo floor of the practice space as seasoned teachers demonstrate movements to help strengthen muscles and center minds. Iyengar class instructors walk students through routines to open joints and cultivate stamina, and students perform restorative-yoga routines to melt stress with gentle stretches and breaths deeper than a bass solo inside a moon crater. In addition to posing on mats, students can visit the studio’s four-panel yoga wall, where sturdy straps assist inverted moves and other advanced body-weight exercises without risking injury. Like a medieval castle’s daycare center, many classes incorporate blankets, blocks, and sandbags, which help students hold their poses as they hone their alignment.