| Abbreviation | Definition |
|---|---|
| FFOA | Functional Fitness for Older Adults |
| FFP | Fun Fitness and Philanthropy |
| FFP | Functional Fitness Programing |
| FFS | Fitness for Service |
| FFSA | Functional Fitness St Andrews |
| FFT | Functional Fitness Test |
| FFTC | Functional Fitness Training Center |
| FFU | Fitness For Use |
| FFW | Fitness fruit and water |
| FFY | Fitness For You |
| FFY | Freestyle Fitness Yoga |
| FIT | Fitness In Time |
| FIT | Fitness Incentive Team |
| FIT | Fitness Information Topics |
| FIT | Fitness Innovation Team |
| FIT | Fitness Innovation Technologies |
| FIT | Frequency Intensity Time Type |
| FITBIT | Fitness Interval Tracker & Body Index Technology |
| FLOF | Fabulous Ladies of Fitness |
| FLX | Fitness Life Xperience |