The 37-year-old striker has hit 10 goals this season as Leicester seek an immediate return to the Premier League and is determined to keep himself in top shape to extend his career for as long as possible.
Vardy told BBC Radio Leicester: "Age is just a number.
"You are as old as you feel, how your legs feel, and I make sure I look after myself and make sure I recover right and do extra when I'm at home.
"So as long as I keep doing that, I'll keep feeling fresh."
The former England international added: "I don't really look back, it's all about looking forward."
Vardy has helped Leicester to glory in both the Premier League and FA Cup since he joined the club back in 2012 but explained that he has added more to his game this season under the possession-based style of manager Enzo Maresca.
He said: "Like anything, you can never be too old to learn something new.
"It's the way he wants us to play and when you are on the training pitch, it's all about taking that, practicing that and making sure that you are able to do it so you give yourself a chance of getting into his team.
"Playing the football we do has been really enjoyable for myself personally. It has added a different dimension to my game, so it's been brilliant."