confused

joshis_bunny

firstly I don't know if this is the right place to put my post but here goes. My workouts consist of two gym visits a day, my first is a circuit (cardio and weights) and my second is purely treadmill. When i do my circuit train in the morning i take a watered down cordial to drink (as i have low sugar levels) but when i do my treadmill in the afternoon i have been taking water. I have found that in the afternoon while i'm working out if i have small sips from time to time during my workout my stomach bloats quite bad whereas when i do the cordial in the morning my stomach doesn't. Does anyone have any ideas on why my stomach does this.