Coffee contains nearly 400 other chemicals, including trace amounts of several vitamins and minerals, tannins, and caramelized sugar.


  • Stimulates the central nervous system.
  • Can help you stay awake and alert.


  • May contribute to difficulty falling asleep and disturbed or reduced sleep.
  • Drinking large amounts can cause irritability and jittery nerves.
  • Increases excretion of calcium.

Tags : coffee, can help you stay awake and alert.