On March 30, 2021 at the Annual League Meeting, NFL team owners voted in favor of expanding the regular season, marking the first major change to the competition’s format in more than four decades.

Sleep happens in cycles that include three non-rapid eye movement (NREM) stages and one rapid eye movement (REM) stage, repeated 4 to 5 times nightly. Each cycle typically lasts 90 to 110 minutes. The ...