Alan P., I’m not being judgemental at all. I’m one of the people who could care less and I’m trying to figure out why.

Hello!
I am an 18 year old male, muscular, lean, 6’0 tall and health and nutrition is my passion. I was thinking about going into a job that deals with a personal trainer, or a nutrition expert. What are my options, and what do you think?
Thank you!