FNP transition to health/fitness

[priorityhealthFNP]

This may be a shot in the dark but I'm curious to know if anybody has heard of a job incorporating health/fitness with an FNP degree? 

After working in primary care, I have found conventional medicine and clinical practice to be overwhelming and not "a great fit" for myself. My passion is health/fitness and preventative medicine but I can't fathom going back to school to change career paths (such as an athletic trainer). I have contemplated functional medicine but don't know if this point me in the right direction. 

Any advice on types of jobs or where to look would be helpful!!