Energy surges through Powerflow Yoga, in the sunbeams that pour through its windows and the bodies that bend beneath its recessed lights. Here, experienced instructors guide yogis of all levels toward tranquility in balmy temperatures that help loosen tight muscles, oust pent-up toxins, and melt cheese wheels for after-class fondue parties. Overhead fans circulate fresh air, which students inhale during deep-breathing exercises that focus the mind and invigorate the body. During hot Powerflow Vinyasa classes, the group practices arm balances and inversions, which can be modified to accommodate injuries or challenge advanced students. Shaped by several teaching traditions, including Ashtanga, Iyengar, and Jivamukti, this class showcases yoga’s power to hone bodily alignment and cultivate inner peace. Warm Yin sessions provide a calming counterpoint with lengthy poses that gently stretch the connective tissues. After class, students can retire to the changing rooms, where showers await to whisk away sweat beads.