Brady still playing at 40 in pursuit of very particular milestone

Tom Brady has seemingly done it all in the NFL.

Five Super Bowl titles. Three MVPs. Four Super Bowl MVP trophies.

There's still one mountain left to climb, however.

"OK, so the main reason I'm still playing is I haven't hit 1,000 career rushing yards yet," Brady jokingly wrote in the Instagram caption for a video of him training on the beach.

"Thirty-two to go!"

Brady, however, may be better served by working on his receiving skills.

(Photo courtesy: Getty Images)