I actually watched a video about what he supposedly eats in a day. Of course it included some supplements he sells, plus a lot of fancy, prepared vegan dishes and various trendy drinks like kombucha. I guess you can follow his special diet if money is no object and you have people who can buy and prepare everything, or order from upscale vegan restaurants which apparently are easy to find in California.
I think a Travis/Kourtney couple would be terrifying to share a meal with. The rigid control and self-righteousness would be so exhausting. I would if their children will have food issues, like orthorexia. I'll bet they don't get much comfort food.
I wonder if after all the health food, Travis still drinks or does drugs. Honestly, I don't find him that healthy looking, but on the other hand, I guess you need enormous stamina to be a drummer, so maybe he's in better shape than he looks.