With consistency. Whether I have 1 cup of coffee in the morning, or drink caffeinated beverages all day, the key for me is to do that consistently, or suffer dire consequences. Ramping up, I can’t focus and anxiety attacks. Ramping down I get migraines.

Woe betide me if I am on a ramp down and find myself having to take an Excedrin or three. That spike keeps me up for days.