"I feel pretty good," Keith said at Madison Square Garden, where the Blackhawks will take on the New York Rangers on Thursday night in their first game following the Olympic break.
"Obviously, it takes a few days with the jet lag, but I'm excited to be back with the guys and get going."
Keith, 30, now has two gold medals, after winning his first in Vancouver in 2010. He's also won two Stanley Cups.
"I'm pretty happy," he said. "It was a privilege to be on that team with so many good players."
Keith (three goals, 45 assists) has been a workhorse all season, averaging 24 minutes, 32 seconds of ice time (19th in the NHL) as a top-pair defenseman for Chicago. He averaged 21:06 of ice time in six games for Team Canada.
"It's nice to have a couple days to adjust and get the body somewhat back to normal," said Keith, who rejoined the Blackhawks at Thursday's morning skate. "It feels good to be back skating with the guys and be out there."
After facing the Rangers, the Blackhawks head back to Chicago, where they will participate in an outdoor game Saturday night against the Pittsburgh Penguins at Soldier Field.
"Like you said, it's just off to the races right away," he said. "I think it's a good thing to get back in the swing of things hard and fast."
• Keith and his partner on defense, Brent Seabrook, guest-starred on Tuesday's episode of the NBC Drama "Chicago Fire."
"It was fun," Keith said. "I don't think I'll be quitting hockey anytime soon to become an actor. But it was a lot of fun, it was cool. The people on the set were really nice."
How many takes?
"Not that many," he said. "We were there for a couple hours. I thought we did a good job being we're first-time actors."
• Blackhawks coach Joel Quenneville said he believes the key for his team -- which features 10 Olympians -- will be to put a lot of shots on net. Rangers backup goaltender Cam Talbot, who gets the start Thursday in place of Team Sweden's Henrik Lundqvist, hasn't played in a game since Feb. 6.