At the moment a brain scan clearly shows areas with low energy levels, in most cases this point has been passed and there is no way back. (sciencedaily.com)
If you are feeling extra tired and are experiencing lower energy levels you may want to choose a lighter roast since they typically contain more caffeine per cup. (personaltraining4u.net)
Many dogs experience very low energy levels on extremely low fat diets and they will feel hungry all the time because they don't have enough slow - burning energy in their diets. (pawster.com)