Health risks and adverse outcomes: Research shows that changing the clock increases adverse health outcomes, including heart attacks and strokes. In addition to this, mood swings can lead to hospitalization and stress.
Some studies show an increase in heart attacks when moving forward and a slight decrease when falling backward
DST was originally enacted to conserve energy. Benjamin Franklin proposed this in 1784, he believed that the first furnace would save the wax (not electricity) of the lamp.
Sunlight is a powerful synchronizer for our internally built clocks. Exposure to light at bedtime makes it difficult to fall asleep and reduces total sleep duration