Wired Cycling in Eckington has a class Tuesdays at 6:15am led by a DC Tri member and designed for triathletes. The class is awesome and the whole studio is super welcoming. I’ve been going religiously since they started the class in January. I highly recommend it. The class is called Spartan Strength.
I also go to the Friday 12pm class there too that integrates trx and functional strength.
I’m really bad at staying on top of strength training, so I go to Wired twice a week. I’ve started to see noticeable changes in strength .