Used for someone who teaches or guides practical skills, especially in fitness, sports, hobbies, driving, or workplace training.
She works as a yoga instructor.
ジムのインストラクターにフォームを直してもらった。
I had a gym instructor correct my form.
She works as a yoga instructor.
I got certified in order to become a ski instructor.
It took me six months to get certified as a fitness instructor.