Sen. Chuck Grassley, R-Iowa, showed off his physical strength by entering a push-up contest with a reporter after a Monday morning interview.

Bloomberg reporter Kevin Cirilli tweeted a video showing the 83-year-old senator completing 25 push-ups.

This isn't the first time the Senate judiciary chairman has displayed his push-up skills. In February, Grassley was challenged by a high school student to a similar challenge, and won.

Grassley is known to run three miles three or four times a week at 5:15 a.m. and often participates in 5k races.