We can not run incontinu. We can work incotinu. We can not do a thing forever. We are humans, we need to rest, we need change, recruit.
Regardless of how deeply we are in the project that work, no matter how much we attract what we do, we need a break.
If you do not respect this principle might as fatigue and can even demolish us to lose the pleasure of working on that project.
Even in love, occasionally feel the need for a short break, a moment of quiet in which to be alone, away from loved ones. Excess is said that love suffocate. Actually not love itself, but that does not let the one next to us a moment of rest, or maybe we need it.