The antonyms for the phrase "cops some zs" are "stay awake," "remain alert," and "be vigilant." To "cops some zs" means to catch some sleep, which is the opposite of staying awake or remaining alert. Being vigilant means watching out for potential dangers, which is impossible when one is asleep. Therefore, it is important to stay awake and be alert, especially when operating heavy machinery, driving a car, or performing other tasks that require focus and attention. A healthy sleep routine is crucial, but it is equally important to balance it with restlessness and consciousness when necessary.