beat a dead horse

“But when you’re awake for too long, then the system gets overloaded. At some point, you can’t beat a dead horse. If you’re asking your cells to remain active for 30 percent more time each day, cells die.”

“I just let him go. You can’t beat a dead horse.”

Not to beat a dead horse, but it’s hard to ignore the uncertainty at cornerback and not have some concern that the team’s best-laid plan — free agent Ahkello Witherspoon being worth the $4 million guaranteed they gave him — has already blown up.

I can still hear my dad saying in his Oklahoma drawl: “Honey, don’t beat a dead horse,” so I divorced him.

“Out on the farm, we used to say, ‘Don’t beat a dead horse,’” he said and laughed.