The 49ers lost an All-Pro defensive tackle in Justin Smith, who retired this offseason, which has thrust a major weight upon the shoulders of rookie first-round pick Arik Armstead.
"No down time. You have 3-4 weeks to get ready for camp," Armstead told Sirius XM NFL radio. "There's a lot of expectations and a lot of things my team is going to need from me. There's no down time. You've got to have your body and mind right for camp, and try to have an impact."
The No. 17 overall pick out of the University of Oregon is an impressive specimen; a multi-sport athlete that checks in at 6-foot-7, 292 pounds.
Armstead, who registered 24 reps of 225 pounds at the NFL Combine, was asked about San Francisco's well-known weight room facility, in regard to getting his body ready for his first NFL season.
"I haven't been in the weight room with all the vets yet . . . I'm excited about being part of that culture and getting in the weight room a lot more and building that strength that I think is going to help me on the field. I'm excited to be a part of that culture, and get with those guys, and see how strong I really am. And you know, be around them, and allow them push me to that next level."
But if Armstead hopes to have an immediate impact, he'll have to be able to do more than out-lift his fellow teammates.
Learning the 49ers' 3-4 scheme, now run by new defensive coordinator Eric Mangini, will be critical.
"As a 3-4 end, your responsibility is different," Armstead said. "You're expected to take on bodies and keep guys off linebackers, and also make plays yourself. I take pride in that. As a 3-4 end, we have to beat up offensive lineman and put hands on them.
"I think my assets and my skills with my length, it helps me and allows me to do that. I take pride in that."
Armstead is confident he'll be able to contribute sooner rather than later due to the similarity between the 49ers' defensive scheme and the one he played in during his time at Oregon.
"Coach Mangini is real cool. I met with him throughout the [NFL draft] process. The defense is similar to what I did at Oregon. That's going to allow me to pick it up even faster."