3. Too much caffeine causes insomnia and nausea, leading you to be tired all day, and less efficient.
4. Caffeine easily dehydrates, and the acid in coffee can cause stomach upset, heartburn, and digestive problems.
5. Caffeine can cause insulin sensitivity, making it more difficult for your body to regulate blood sugar.
6. Caffeine stimulates the release of adrenaline, which affects our “fight or flight” response. This is a very good thing when you are running to escape a bear in the middle of the forest, and therefore you are a little tense, but it is not terrible when you are angry while answering several company emails.
