All physical, mental and intellectual effort uses up energy. To make good from this loss, we require repose. Even as night follows day, rest and relaxation must follow stress and effort. Of course, restful sleep at night is vital for our well-being. But apart from this, I recommend strongly, the practice of silence during the day.
Silence is relaxation for the mind, even as rest is relaxation for the body. It should be our earnest effort, at least once a day, to escape from the stress, strain, tension and turmoil of life, and practice absolute silence. We can easily give up mindless activities like watching TV or gossiping with friends, to devote to the practice of silence.
Silence helps us commune with the inner self, silence enables us to discipline our petty, calculating intellect.