Bryce Harper shares video of dangerous exercise

WASHINGTON, March 4 (UPI) -- The National League MVP still strives for greatness.

Washington Nationals outfielder Bryce Harper showed that Friday, after he posted a video of himself pushing the limits of his body and modern exercise.

"Extremes are easy, Strive for Balance," Harper wrote on an Instagram post.

The short video shows Harper doing squats while standing on an exercise ball.

Harper, 23, hit .330, with 42 home runs and 99 RBI in his 2015 MVP campaign.

The top pick in the 2010 amateur draft has 97 career home runs in four seasons.

Harper is due $5 million in 2016 but is eligible for arbitration in 2017. Nationals general manager Mike Rizzo told MLB.com that the team has had talks with Harper's agent, Scott Boras, regarding an extension.

"He's a great player," Rizzo said. "A core player of the Nationals, and we'd love to have him here for a long, long time."