San Francisco 49ers defensive end Arik Armstead is a student of the game. But sometimes, it seems he studies a bit too much.

Just ask 49ers defensive coordinator Robert Saleh, who told local reporters that one of Armstead's assets is his intelligence. He can instantly read the plays of the opponents because of his dedication to reviewing game films. But he also shared a funny and intriguing story about Armstead's, um, steadfastness about the NFL.

“He studies film more than anybody, at least on the defensive line, that I've ever been across. I'm being completely honest, it was Friday night, quick story on it. It was Friday night and I'm watching a movie with my wife, it’s normally date night, and I get a text from Arik Armstead talking about play number one, two, from different games.”

Saleh said he didn't have a choice but to respond, earning the ire of his true coach—his wife.

“So, here I am texting what Arik Armstead and my wife was like, ‘Can we watch a movie?’ So, he studies film. He's been through the ringer. He's got a lot of experience on him.”

Armstead, who was picked 17th overall by the 49ers in the 2015 NFL Draft, continues to play a significant role for the Bay Area squad. Last season, he put up career numbers across the board, tallying 54 tackles, 18 quarterback hits, and an average of 10 sacks per outing.

Saleh also said Armstead has taken more of a leadership role. Despite being only 26 years old, he's already the most senior member of the 49ers defensive line. He's being more vocal in mentoring young guys like Javon Kinlaw, who was the 14th overall pick in this year's NFL Draft, and last year's second overall selection, Nick Bosa. With all his game studying, Armstead sure knows talent when he sees one.

If only he can learn the art of when not to text.