When Greta asked Mike how his vegan diet affected him mentally, he said he felt "Incredible." It gets better as Mike then said:
Mike Tyson: Vegan Diet Makes Me Feel Awesome
April 14, 2011 — 17:45 PM
"I wish I was born this way. When you find out about the processed stuff you have been eating. I wonder why I was crazy all those years."
Go Iron Mike!