Correspondence to Dr Alessio Bricca, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense 5230, Denmark; abricca{at}health.sdu.dk Twenty-three studies from 17 ...
Within about 45 minutes, all the caffeine in a cup of coffee enters the bloodstream. Its effect lasts, on average, for about two hours. Studies also indicate that people who consume caffeine have ...