Find a gym with classes like Zumba, Crossfit, Spin, whatever. If you go to a few classes you will find one you like. The instructors design the class so that

Find a gym with classes like Zumba, Crossfit, Spin, whatever. If you go to a few classes you will find one you like. The instructors design the class so that you get a reasonable work volume with low risk of injury. For me the instructor always gets me to do more work volume then I would do on my own. A class is good because you can compare your performance to others that are doing the same thing.