Monty Python star Michael Palin has urged grandparents to keep travelling adventurously into their older years.
He told the Daily Mail that travel keeps him young, and physically and mentally fit. It also kept his 46-year marriage strong.
The famed comedian turned to travel writing 25 years ago after the Monty Python series came to an end in 1974.
He has never stopped since, and doesn't intend to.
The 70-year-old has visited 96 destinations including both Poles, the Sahara, the Himalayas, Brazil, and eastern Europe.
Travel shows us that there is more that unites us all than divides us, he said, an antidote to the depressing media-driven picture of a world falling apart.
He said he liked to travel not for celebrity, but for the chance to inform, educate and entertain.
Old people have a lot of wisdom to offer, he said. He didn't want to sit in a chair and shut up.
His advice to older travellers was to plan the trip well, to not try to run up and down Everest, and to not swim the Channel on a daily basis.