Personal Trainer License

personal trainer
A person who creates custom individualized diet and exercise portfolios for the client.
A personal trainer is a person who helps people exercise. The scope of practice for a personal trainer is to enhance the components of fitness for the general, healthy population.
Individual that may or may not hold any certification or degree in the related field of strength and conditioning. This person is commonly found in a private gym setting. (Former players, weight lifters, want-a-be coaches)

license
freedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech)
Grant a license to (someone or something) to permit the use of something or to allow an activity to take place
Authorize the use, performance, or release of (something)
Give permission to (someone) to do something
authorize officially; "I am licensed to practice law in this state"
a legal document giving official permission to do something