Upgrade Your Gu
I went to EFS in an effort to combat cramping during 70.3 races. I wanted my nutrition to have a little more bang for the buck. Overall I feel that it's a tool in the toolbox that's had a positive impact. As I've started to get a handle on cramping I attribute it mostly to controlling fatigue by not going too hard on the bike. However, EFS definitely works well as a sugar replacement for long endurance events. It's easy on the stomach and chalked full of goodness.