Everyone needs a break from work but to come back to form you don't need anything. I have found out that if you leave a lot of break, the mind doesn't take much time for it to come back to form if you have something to do.
In other cases where you don't have anything to do you become bored. You have do some tasks like early morning walks or Running or Jogging or something that pumps your adreline. Studies have shown that these outdoor activities increases your mind power when you are bored. Early morning is the best time to activate your brain. It gives you additional hours in the day where you can concentrate on yourself. Even watching movies or hanging out with friends or playing video games would help. These tasks are vital for our mind to be active.