one way to let you full of engergy everyday after a long time of work, maybe you will fell very exhausted and all you want to do is a good sleep, but most of time , we can not go to sleep. there is one way to make you recovered from the tired. just close you eyes ,and focus at your breath, remember ,just focus about the breath and don't think about any other things. just five minutes ,after you open your eyes ,you will find out that the world is more brightly and you will feel much better and can focus on your work again.