Hi KayNicole!
I adore hot yoga. I've been going off an on for the last 10 years, whenever I could scrape up the class fee, and if I couldn't, the studio I went to had a community day where you paid what you could into a can as a donation.
I especially like Bikram, because it's always the same. You show up for class, 90 minutes, and the 26 asanas (poses) are in the exact same order each time. You slowly learn the series of poses, each one done twice in a row so you can correct or push yourself harder (you can also make a 1/2 class for yourself by sitting during the first or second set of each asana).
It seems really intimidating with all these beautiful people doing pretzel balance things with expensive looking mats, aluminum bpa free water bottles and hemp ankle bracelets. In reality it's a bunch of sweaty and sometimes smelly people wobbling as they try to find their center in the mirror and they could care less about you and what you are doing because your yoga practice is about you and you alone.
Go do it!!! You will feel sweaty and sore and exhausted and like you really accomplished something!!
I did find that yoga tightened up my legs while training for my 5k, so keep in mind you may need to do some extra stretching or walking warm up if you are a runner.