San Francisco 49ers tackle Trent Brown, fresh off of his attendance at Denver Broncos linebacker Von Miller's Pass Rush Summit last week, isn't taking any breaks as NFL players have time off until team training camps begin.

On Saturday, Brown posted videos on Instagram of himself doing some boxing with trainer Emory Bernard in Atlanta, Georgia.

Nun like gettin it in witcha dawgs

A post shared by Trent Brown (@_tbrown77) on

🤑🤑🤑 #TB77 @fitbyjoc 🔋🔋🔋

A post shared by Trent Brown (@_tbrown77) on

Brown figures to be a starter at tackle when the 49ers kick off the regular season on September 10th as they host the Carolina Panthers. Last month, 49ers general manager John Lynch praised his offensive lineman during an interview with Mike Florio on
Pro Football Talk Live."

"I think Trent Brown, our right tackle, he's a mountain of a man," Lynch said. "I remember, last year, I was calling the Denver Broncos preseason and I was out at the joint practice between the Broncos and the 49ers. And I walked on the field and I'm usually not fazed because I've been around these players for a long time – playing and then in the broadcast booth – and I looked over and I said, 'Who is that? That's the biggest man I've ever seen on a football field.' And it was Trent Brown.

"Then I watched him go toe-to-toe with [Broncos edge defender] Von Miller on one-on-ones and held his own and Von said as much. He came back – he struggles to keep his weight down a little bit. He came back a little heavy but he's worked incredibly hard to bring that weight down. I just think he's got a lot of great football in front of him if he can control that weight and be consistent with it and be accountable to us and to his teammates. I just think the sky is the limit for how good he can be. He's a guy who's really jumped."

Brown is entering his third season with the 49ers – the team that drafted him in the seventh round of the 2015 NFL Draft. He appears to be working hard this offseason after being criticized last offseason for being out of shape after reporting to the 49ers' offseason program.