Write out a list of your absolute "must haves" in an ideal gym, which are different from the "nice to haves," says Tanner Martty, a personal trainer with LEAF Lifestyle in Santa Monica, Calif. If you're seriously into strength training, a spacious and well-maintained free weight area might be high on your list. You'd be surprised how many gyms don't have a space where you can do your own bodyweight workouts or foam rolling. Also, will you be showering and getting ready for work at the gym? Don't forget to take your pre- and post-workout routine into consideration when making your list.