Every day is a brand new day. It feels good to run on maximum output. If your feeling low on energy, have some coffee. When your feel low on maximum output, build up energy, and become one with the wind! Everybody builds up a certain statistic in their bodies in order to become more energetic day after day. It's also effective when it comes to sporting events, like the Olympics for example. Furthermore, this is all about potential energy, which is possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. The more you use energy at maximum output within a few day, the sooner you might be close to passing out, so try not to let that sort of thing happen. Always remember that its good to be energetic, but too much of it could kill you.