I can't have coffee first thing in the morning and don't make it at home. I have to drink quite a bit o water before even pondering buying a coffee..

Yeup, my drink mixture has electrolytes & doesn't bother my tummy. If I don't have breakfast before I ride in the morning, the drink mixture's ok & have no issues. (www.highfive.co.uk)

I must have one odd digestive system.