What effects are attributed to caffeine? It is known to reduce fatigue, increase the attention span and strength in sportspeople and, because of this, it increases sporting performance. Because of these advantages, which have been scientifically proved in the practice of sports, there are currently all kinds of supplements available: gels, bars, tablets, powders, shots, drinks… that contain this substance which we can obtain easily and without the need for a medical prescription. Nonetheless, caffeine is also present in other “foods” which, at times, we are not aware of and we may go beyond the maximum health and tolerable caffeine limits, for example, in cold dri...