The Impact of Caffeine and Alcohol on Bodily Functions of the Water Flea.
Summary: The paper looks at the impact of caffeine and alcohol on a heart rate, due to the difficulty of experimenting on human subjects, water fleas are used, and this gives results that clearly indicate that increased exposure to more alcohol or caffeine will change the heart rate. The hypothesis that caffeine and alcohol will have a direct biological impact on the body appears to be proven, however, in the case of alcohol this is a decrease in heart rate and for caffeine there is an initial increase and then a decrease.