Coffee-lovers are then left feeling tired in the afternoon and too-often reach for their next fix. This leaves greater amounts in your bloodstream at bed time.
“Caffeine very quickly creates a vicious cycle,” asserts Bradberry.
Make an improvement
Giving up caffeine for good – or at least cutting down – has the potential to improve your performance and make you a much better manager, insists Bradberry, but it won’t be easy.
Researchers at Johns Hopkins found that caffeine withdrawal impairs concentration, causes headache, fatigue and sleepiness. Some people even reported flu-like symptoms, depression and anxiety after reducing their daily intake by just one cup.