I know if I have coffee or a caffeinated drink before a hard workout or running race that there's a clear benefit. I can tell - I can push faster with less effort.
The problem is my stomach. I have stomach discomfort during races if I'm not careful with diet. It's much worse if I drink coffee or an energy drink. (It's the usual stomach problems when racing plus the discomfort of caffeine.)
Any ideas how to minimize my stomach discomfort during a 5K or 10K race (i.e., 15-40 minute efforts) while still getting the positive benefit of caffeine?