I don't work out with a trainer, but I eat 6 meals/day. They aren't all small (my lunch and dinner make the buik) but I spread my calories out over the course of the day (I eat anywhere from 1400-1650 cals per day).

I wake up:
-Protein shake
-Pre workout supp
*go to gym*

Come home:
-Protein shake
-Scrambled egg with 1 piece of turkey bacon and low sodium/sugar ketchup

Get to work:
Either:
-Banana topped with 3 tablespoons PB2 -or-
-1/3c oatmeal mixed w/ 4oz unsweetened apple sauce, 1 teaspoon cinnamon, 3oz. of milled flax seed

Snack before lunch:
-1/2c cottage cheese with 1oz almonds mixed in -or-
-a Quest bar

Lunch:
-Always changes, but usually 250-400 calories (usually a smaller portion of my dinner from the night before)

Afternoon snack:
-Turkey lunch meat with pepperoni, mozzarella cheese stick, sliced onion/tomato, lettuce rolled up inside (2 of these)

Dinner:
-400 to 450 calories

Before bed:
Casein protein shake