New York Hot Yoga – New York Hot Yoga review. Sassy hit the mat on the Upper East Side at New York Hot Yoga, an OG studio serving up sweaty realness since 2001. No frills, no fluff—just 100+ classes a week of steamy, soul-powered flow. Sassy jumped into a Hot Power Flow and it was hot, fast, and not for the faint of heart. Bring your own mat, towel, and a litre of willpower. Locals love it, tourists sweat buckets. Classic NYC yoga grit with zero pretense and trust me, you’ll leave feeling like a hot mess in the best way.