Coaching in all forms has multiple benefits, fitness, health, tangible outcomes, enjoyment, remuneration, success, winning, values, building character, self satisfaction.
The more one coaches, the realisation is that less is needed for physical preparation of an athlete but more for inspiration and support. Furthermore to provide an objective view point when the athlete is doing too much! Practical judgement that the athlete has had exactly enough training is key for a coach in all sports. This is also indicative for training racehorses knowing when to ease up their training.
Marti Liquori https://en.wikipedia.org/wiki/Marty_Liquori” the athletes that truly make it are mentally some of the toughest people in the world. No one is born with that kind of toughness, and it doesn’t come overnight. You must develop it, cultivate it, Cherish it!