Did you know the brain tires in a similar way to muscle tissue? When a muscle is fatigued from lack of oxygen, it gives you a signal (e.g., pain, cramps). In order to recover, you must rest. The brain gives you signals when it is fatigued, too, such as:
• Inability to concentrate or put thoughts together
• Being jumpy, nervous, or irritable
• Difficulty falling asleep or staying asleep
And in order to recover, you must rest.