On: At 93, he's as fit as a 40-year-old. His body offers lessons on aging

You can age well eating mostly rice, beans and fruits, so... genes?

https://www.forbes.com/sites/cathyhackl/2020/08/12/what-cost...

> Every morning, at dawn, before the men of Nicoya ride their horses through the mountains of the Costa Rican peninsula, they eat a healthy breakfast.

I think you're underestimating how taxing horse riding is

I was thinking a mix of genetics and diet. More the former than the latter, seeing how Ireland isn't a Blue Zone country. I wonder what his diet and routine was before he took up rowing.