I like to eat healthy. I'm not eating too much meat. I stay away from pork and chicken. Other than that I try to balance it out. Trials is a mix between body and bike control, balance and concentration.
Experience is a big factor.
You have to make your bike and additional body part. It takes a lot of practice. That's why it's an exotic sport and not a mass sport. People don't have the patience to put a lot of time into it. In a lot of ways I think it's similar to golf.