Obasanjo made the remarks on Saturday in Osogbo, Osun State, during a book launch organised in honour of the Asiwaju Musulumi of Yorubaland, Edo and Delta, Olatunde Badmus, as part of activities marking his 80th birthday celebration.
The former president, who was represented at the event by Osun State Governor Ademola Adeleke, offered advice to elderly citizens on maintaining good health and longevity.
In a speech delivered on his behalf, Obasanjo praised Badmus for his achievements in business and leadership, noting that he consistently placed God at the centre of his endeavours.
He also used the occasion to share what he jokingly described as the “rules” for joining the club of people expected to live beyond 90 years.
“By every standard, you are successful in all your endeavours. Your leadership roles in all the businesses you undertook are impressive. In business and outside business, you always make God your partner,” the statement read.
“At the age of 80, let me welcome you to this club. Let me read the rules of the club to you. Number one, your father and mother must not be alive, you must sleep for eight hours every day, you must undertake one hour of daily exercise like walking, and you must eat only twice a day.
“With obedience to these rules, your admission is registered and your longevity beyond 90 years is assured,” he added.