The sixth-year 28-year-old completed the regular season with 367 touches of the ball either on the ground or through the air, accumulating 1,933 total yards and 12 touchdowns as his side narrowly missed out on reaching the post-season.
Speaking to reporters, Forte said: "I think age is just a number like everyone says. It doesn't really matter if someone is 29, 28, or 30 years old. It just depends on how their body feels and at the same time if they take care of their body.
"So I expect a lot of work. It wasn't like I was worn out at the end of the season or anything. I only averaged 18 or 19 catches a game but with the catches you get more touches that way."
The rusher also said that he backs his team's decision to offer Jay Cutler a bumper extension to his contract, one which will see the quarterback remain with the franchise through to the end of 2020.
Forte added: "I think it's a smart move. Jay's a great quarterback. He went through some injury trouble this year, but he was playing very well in this offense.
"I just want to see him come back and be healthy and see how good he does, especially with a whole year under his belt with the offense."
The Bears finished runners-up to the Green Bay Packers in the NFC North with an 8-8 record.