You used to be so rock and roll. Thrashing at Fugazi shows. Sneaking into the 9:30. Stealing smokes from Aunt Selma’s handbag. Lo, how the mighty have fallen. Nowadays, the closest you get to rocker cred is the Ramones T-shirt you wear to do your sun salutations. Unless, that is, you’re doing them at Alexandra Luzzatto’s spankin’-new rock and roll yoga classes at Hot Yoga. Luzzatto, a former D.C. punker and Xena action babe who teaches yoga at the White House and the CIA, has swapped Krishna Das and sanskrit mantras for A Tribe Called Quest, David Bowie, and The Clash. The practice mixes standard yoga poses with dancey moves — to get you a little sweatier, a little faster. The constantly changing playlist — hard-core, the way you remember it, with the dial turned waaaay up — ensures you’ll never get bored. No matter how many times you take the class. It’s best not to attempt any moshing during downward dog. After all, you’re not as young as you used to be. Rock & Roll Yoga, at Hot Yoga, 3408 Wisconsin Avenue NW, between Norton Place and Newark Street (202-468-9642).