10 Important Reasons to Start Making Time for Silence, Rest and Solitude (link)

"The brain is the most complex and powerful organ, and like muscles, benefits from rest. UCLA research showed that regular times set aside to disengage, sit in silence, and mentally rest, improves the the 'folding' of the cortex and boosts our ability to process information."

From "10 Important Reasons to Start Making Time for Silence, Rest and Solitude" by Thai Nguyen