I was life-long anti-caffeine, except the occasional soda. Then I started drinking more and more of it as I drank more and more soda. Eventually, I realized t

I was life-long anti-caffeine, except the occasional soda. Then I started drinking more and more of it as I drank more and more soda. Eventually, I realized the soda was doing bad things to my system and got off it. I didn't drink coffee or tea, so that mean almost zero caffeine as well. Lately, I started drinking chai twice per day at work. I've found that I'm a lot more productive and active, both at work and at home, though I do tend to get really sluggish a couple hours before bed. I don't know drinking so much caffeine permanently altered my metabolism/body chemistry so that I need caffeine, or if it was an inevitable consequence of aging. It's weird to find that I now "need" caffeine just like everyone around me, when I definitely didn't just 10 years ago.