I came here to get stronger due to being rear ended in a car accident.  I was having issues with back pain, but I wanted to strengthen as well as feel good.  You go through an initial how to work the machines and how to adjust for your sensitive areas first, before you can even sign up for classes.  A little intimidating at first, but most helpful.  You'll want to go through a few classes to find your right instructor(s) that best fit your needs and push you in the right way.  For any of them, don't be afraid to ask for help to make sure you feel it or if it's uncomfortable.  My favorites are Ashly and Erin.  I also really like the stretch classes on Wednesday.  Pricing is very reasonable and the booking site also has a mobile app, very convenient if you need to make changes or add classes while you are thinking about it.