My new challenge, I stopped taking caffeine three days ago,

Positive side are as follows,
-You can fall asleep as soon as you go to the bed.
-You do not go to the toilet much.
– Caffeine stimulate your bladder.
Negative side
– The side effect of quitting caffeine hurt my head.  😢
   Caffeine constricts blood vessels in your head.
  Your body tries to widen blood  vessels which is a normal situation.
  According to my research on the internet, it will 3~10days depending on the person.
I will keep trying to quite !