Photo: @kaylaitsines Instagram

6. Educated, Certified & Experienced Fitness Pros
Being a certified fitness pro is a growing profession that usually requires a standardized test to be taken that demonstrates a trainer's knowledge of gym safety, exercise form and basic training principles. 

7. Yoga
De-stress and de-clutter the mind with yoga that has been proven to also improve flexibility and balance while building muscle and endurance. We’ll namaste to that.

8. Personal Training
Working one-on-one with a personal trainer can help you realize your fitness goals by learning about health, fitness and what your body needs in order to cross the finish line.

Photo: @ClassPass Instagram

9. Fitness Programs for Older Adults
According to the ACSM, there may be more specific classes and fitness programs tailored to older, retired people who want to stay active.

10. Functional Fitness
Whether you don’t want to run out of breath after climbing stairs or just want to successfully lift your carry-on onto the overhead bin on the airplane, functional fitness is all about helping you achieve fitness feats in everyday life.