I removed caffeine from my diet during covid. I found a 2% increase in sleep quality using rudimentary software (Sleep cycle) over a period of a year. What I

I removed caffeine from my diet during covid. I found a 2% increase in sleep quality using rudimentary software (Sleep cycle) over a period of a year. What I did find was a reduction in anxiety as well. That said someone close to me was doing the opposite during the pandemic and saw markedly better concentration thanks to caffeine. I think it depends on people.