I stopped drinking coffee for the last three months because it seemed to make me irritable. Now I sleep much better as well. However, my kids passed on their cold to me this past week and having a tall coffee in the morning certainly jump-starts my engine during these low periods. I am likely caffeine-sensitive and avoid higher amounts on a regular basis. But when I can use a ‘lift’ a stiff dose does wonders.
Probably best to follow the same infrequent dosage pattern with athletes, topping up during low periods, key workouts or competitions.