Sweaty with skill, Elizabeth teaches a challenging and athletic class.
Exhale Spa, 980 Madison Ave., Manhattan
When you begin a practice in plank pose, you kind of get the idea that it's going to be a tough class. Elizabeth Welp is a no-nonsense teacher who likes to focus on building strength, sweat, and stamina: Imagine a ten-minute sequence on one side and lots of one-legged planks. You’re likely to feel a little exhausted by the end, but check out your biceps!