If it feels like your morning coffee isn't giving you the jolt of energy it used to, your tolerance may be to blame. You can get your caffeine tolerance back to normal levels in about two weeks, but you'll need to wean yourself off of it. Photo by richoz.
Kicking your caffeine addiction isn't easy, but slowly cutting back on your coffee, tea or energy drink intake is the least unpleasant way to do it. Joseph Rivera, the coffee researcher who founded Coffee Chemistry, explains to Science of Us that reducing your intake by half every few days will do the trick. If you normally drink eight cups of coffee a day, for example, go down to four cups for two or three days. Then reduce your intake to two cups for a few days. Rivera says that after a week or so of weaning, you'll be caffeine-free.
If that seems too fast, don't be afraid to take it slow. You'll need to survive an entire — potentially headache-filled — week with zero caffeine after that, so your body can properly reset itself. If won't be easy, but if you can get through both weeks, your tolerance should be reset. When you go back to having caffeine, start off will small amounts. You can read more about it at the link below.
Here's How to Undo a Caffeine Tolerance [Science of Us]