Question: what happens when you drink too much coffee and not enough water?
Answer: Anxiety. Caffeine is known to increase alertness. ... 
Insomnia. Caffeine's ability to help people stay awake is one of its most prized qualities. ... 
Digestive Issues. ... 
Muscle Breakdown. ... 
Addiction. ... 
High Blood Pressure. ... 
Rapid Heart Rate. ... 
Fatigue.