Quarterback Colin Kaepernick did not take much of a break after the 49ers' Super Bowl loss before getting back to work for the 2013 season.

Almost immediately after the conclusion of the season, Kaepernick reported to CES Performance in Atlanta to begin his offseason workout regimen. There, he knew he could blend in without getting tugged in a hundred different directions due to his new celebrity status in the Bay Area or his hometown of Turlock.

While any athlete hits the weight room with the goal of becoming bigger, faster, stronger, 49ers coach Jim Harbaugh said he has spoken with Kaepernick about becoming too big and too strong. (There's no such thing, obviously, as too fast.)

At the recently completed NFL owners meetings, I asked Harbaugh if there was a fear that Kaepernick, who is seemingly already plenty strong in the upper body, could spend too much time in the weight room for his own good.

"If you're just talking about weightlifting and upper-body strength, yes, I think there is that fear," Harbaugh said.

"It's something we've talked about. 'I don't want you getting too jacked-up, Colin.' I want some speed, quickness, not just (flexing chest his muscles)."

Kaepernick's arm certainly does not need to get any stronger. His throws the ball with plenty of velocity, to be sure. He dislocated Randy Moss' finger with one laser last season. And during Super Bowl week, 49ers teammate Michael Crabtree said some receivers would rather catch warmup passes from the other quarterbacks.

"When we are doing individuals with the quarterback and the receiver, guys go to the back of the line when it's Kaepernick's time," Crabtree said. "They try to time it out so that if Kaepernick is (throwing) third, they want to go fourth. It's a lot of heat coming."