I support the vegetarian movement from the perspective of cruelty, sustainability, and eco-friendliness. My understanding is that Telsa's belief that a veggie diet is superior (regarding mechanical and mental performance) has been disproven. Anecdotally, of the people around me, I've seen no correlation in the top athletic/career achievers to any kind of diet. Rather, balanced and disciplined eating seems to correlate.

Are there any good sources for a particular diet/restriction that correlates with mechanical or mental performance? Anecdotally the top performers I know generally balance meat/fruit/vegetables, eliminate sugar, and follow other common nutrition knowledge without committing to any particular diets or restrictions.