You may be overdoing it if you constantly need to empty your bladder. Caffeine can act as a mild diuretic, stimulating frequent urination in some people. And if you're drinking caffeine and not getting enough water, you're not hydrating your system enough. (Urine that is dark yellow or orange is a sign of dehydration.) Try eating a healthy snack with your caffeine. Food will slow the fluid's movement through your digestive tract and stomach and eventually your bladder.