[tcmb]

The body will get used to it, the effect will wane unless the dosage is increased, and before you know it you cannot function without the stimulant.

You can replace 'stimulants' with 'alcohol' in the quote above and it will still be true.

[istjohn]

Those arguments apply equally to the use of stimulants for ADHD treatment and to coffee use for a pick-me-up, yet both practices have fierce advocates.