I took anatomy classes. I went to medical libraries and talked to doctors and nutritionists. I did the whole thing before using myself as a human guinea pig.

I've never followed a vegan or vegetarian diet in the past but I think I could do it. It would not be easy. I have worked with nutritionists who have said a vegan diet is not necessarily all positive for your health because you need nutrients you only find in meats. I believe in a balanced diet.