When you are full of energy, you are happy and your productivity is high. You are able to manage your tasks and time schedule. You can multi task and deal with people at home and work without tiring yourself out. Ever wondered how it happens?
It is because of the wonder hormone called serotonin. When the serotonin levels are high, you feel good and your mind is relaxed. When serotonin levels are low, you tend to get irritated, feel low on energy and fatigued. It generally happens during late afternoon hours.
Learn more about 4 pm fatigue here.