If you want to take certain classes at the gym or take part in guided group exercises, it may be important to check the credentials of the instructors. If you intend to engage personal instructors during your workouts, ensure that they are available and that they have the particular expertise that you are looking for. Try to find a gym that offers you access to instructors and personal trainers without much extra cost.   Other things you can consider There are other small details that can make a particular gym a better fit for you. A gym may have better standards of hygiene, convenient parking, nicer workout music, or even extra membership privileges. Your ultimate decision may come down to which gym offers free shampoo and extra towels in the showers, or how nice the other gym members seem. Whatever gym you choose, make sure that the environment is good enough to keep you motivated, and committed to your workout plans.