In this way, instead of boosting the effect of cortisol, caffeine simply replaces it, often in a less effective way. (fitnessandpower.com)
The kinds of ingredients used are either meant to stimulate bowel movements, reduce water weight, or provide metabolism boosting effects via caffeine. (dietsinreview.com)
The move would also have a huge morale boosting effect on the squad as well which could have a positive impact on the pitch even if he doesn't play. (justarsenal.com)