Are you a vegan or vegetarian already?
If so, this is good and you have taken a step in the right direction.
But sadly, many vegans/vegetarians are still not eating optimally. There are some foods which qualify as a vegan/vegetarian that are not phytonutrient rich or even healthy.
I think eating some vegan foods is just as bad for your health as some non-vegan choices. For example, some nutrient poor vegan foods include grits, pancakes(covered in syrup), french fries, home fries, breads, noodles, pasta and potato chips. The processed prepackaged vegetarian meals such a veggie patties or veggie "meats" are also loaded in sodium and should not be over used in a diet.
If you are a vegan/vegetarian athlete and want to learn how you can improve your long term health and your overall fitness while maintaining your vegan lifestyle please contact me via email on my contact page.