Originally Posted by
IanDarkpeak
It's not an Isotonic issue more a complex/simple sugar issue.
JB's, bears, squirms et al are simple sugars which hit the system quickly and give a Sugar high followed shortly afterwards by a corresponding Low. Theya re good for trickle feeding aslong as you keep eating them and/or just as you run out of energy at the end.
I try and take mine alongside Fruit bars, jels, rice pudding;) energy bars(Complex Sugars) etc between the two you get slow and fast release targeting the time you need a boost i.e big climb.
You can slow the release of simple sugars by adding fat I believe.(honey/jam sandwich, buttered of course).