Maybe you thought vigorous exercise was the key to a long life, but perhaps the real fountain of youth is a vegan diet. After all, most species of tortoises can live over 150 years, and most of them really don’t look as wrinkly as you’d expect. The oldest tortoise on record was Tu’i Malila, who belonged to the Tongan royal family in China. Tu’i died in 1965 at the ripe old age of 188. Imagine how amazed she was by things like light bulbs and television.