I'm doing my first triathlon and I'm wondering what to have in my water bottle during the bike ride. People will be handing out plain water during the run.
It's this weekend 1500m Swim, 40km Cycle, 10km Run. I am skinny and weight 132 lbs.
EDIT: for the people saying use whatever I use in training, how does this even make sense? I don't do a full triathlon each training session so the needs are different. Also it would be a bit expensive to use a gel pack each work out (considering technically there's more than 7 a week).