If the meal was high in simple sugars, like a donut, the alertness wore off quickly, whereas if the meal was high in fiber and carbohydrates, like oats, alertness lasted longer throughout the morning.
Doctors are concerned that COVID could become like the flu for which there's a new vaccine every year because the flu mutates so quickly and immunity wears off quickly as well.
A series of recent studies have shown that, though the drink may make people fall asleep faster, they would wake up as soon as the alcohol wore off, which, of course, means them not getting a decent night's rest.