Most coaching for leader or workplace effectiveness is focused on the mental aspects: developing perspective, emotional intelligence, projecting positivity, etc.—all worthy topics. However, there are also physical aspects that should not be ignored and that cannot be compensated for with sole focus on the mental game.
Just like a person cannot out-train a poor diet, a person cannot out-think poor performance habits. The basics of good self-care (nutrition, movement, and recovery) go a long way in supporting great habits that translate to excellent performance at work. The best coaching in the world will be largely useless for someone who is sleep-deprived, un-exercised, or fueling on soda and granola bars.