Unlike usual people, personal trainers have workout and follow a strict diet more carefully. They cannot compromise with their diet routine as it is their profession. They earn by helping others stay fit and if they themselves would act like sloths, then certainly it would be an insult to their profession. That is why they have certain eating and non-eating habits for foods. Take a look at one such routine:
So, the usual diet of a personal trainer is mostly filled with nutritious fruits and protein. However, they do enjoy other meals every now and then as the replenishment of the body with carbs and fats is also essential. But for that, they carefully monitor these for keeping up with the daily workout routines as well. Energy supply is important in their diet plan so they follow it. You can check out online personal training programs offered by such trainers to understand their routine in more details.