Caffeine might make you feel wide awake and full of energy, but it can also lead to anxiety. First, caffeine depresses serotonin in your brain, and this makes you feel depressed and irritable. Second, caffeine makes you urinate more frequently.
This can cause dehydration, leading to depression. Third, caffeine can interfere with sleep cycles and that causes stress.
Avoid coffee, soda, and hot chocolate as much as possible. You may sleep better and won’t feel as jittery.