Reaching for the sun and success all day is tiring work, and everyone must occasionally give it a rest, whether insect, animal, plant, or human.
Evolutionary biologist Charles Darwin in 1880 wrote The Power of Movement in Plants, noting that the Colocasia antiquorum, or elephant ear, dozes in the dark. “The leaves of this plant sleep by their blades sinking in the evening…By an early [morning] hour it had assumed its diurnal position.”
