If you ask some of the nay-sayers about why they think veganism is a joke, they'd tell you that you aren't getting the proper amount of useful fuel and health benefits from the diet.
If that's the case, how does Venus Williams have enough energy to play the hell out of tennis??
Watch her talk all about it, and how it helps not only her game, but her Sjogren's syndrome - an autoimmune disease which leaves her feeling fatigued and makes her joints ache.
Haters gonna hate, vegans!