Brad Friedel is already eyeing his next contract at Tottenham.
The 40-year-old keeper is signed up until the end of next season - but feels he has plenty left in the tank.
He said: "If you can keep yourself free of major injury and you want to keep playing, then you can go much longer than an outfield player could.
"It can he done if you want it - and I do."
Friedel has made 277 consecutive appearances in the Prem - and the last nine have been unbeaten as Spurs have mounted a title challenge.
He added: "These days with all the focus on nutrition and health, together with the less distance we have to cover in training and in matches, why shouldn't a goalkeeper play well into his 40s?
"My body doesn't feel the way someone might think a 40-year-old should feel.
"I don't wake up every morning and think, 'Oh no, I'm 40, I don't feel like training today'."