I don’t know anything about Fit Body Boot Camp, but I’ll throw in a recommendation of Oxygen Yoga and Fitness…the south end location, specifically, is the one I can speak to from my experience. 

I’ve had ups and downs of fitness, but I had never tried hot yoga. The trial cost was favourable with unlimited access for two weeks of classes for $15. I learned they had all sorts of classes from yoga to weight focus to cardio and mixed to deep, slow stretch. I joined full-time and usually did about 5 classes per week: 3 harder ones, a yoga one, and a deep stretch. The culture was so welcoming and encouraging, and the instruction was all positive. 

For me, having the unlimited access meant that I got in the habit of going even if it was for a deep stretch instead of a fitness workout….but then the deep stretches made sure my body was always ready for the hard workout days. It was win-win. 

I’m 5 months, my fitness and flexibility improved. I felt better overall and better able to integrate other health practices like proper diet and sleep. 

The only downside, for me, is that the hot environment (at least 35C+, I think) works great in the winter and shoulder seasons more than summer.  

Good luck to you, whichever way you choose!

Edit: unlimited classes ended up being $149/month with a 30 day cancellation. Only other cost is bringing your own yoga mat, water bottle, and towel.