Leo is the pride of Bay Shore’s Great South Bay YMCA. She turned 100 this past April, but she says she doesn’t feel it. And she shows no signs of slowing down. Other members of the aerobics fitness ...

At the Great South Bay YMCA in Bay Shore, Long Island, it's the ability of this great grandmother to do a five-minute plank. The class quit at two minutes, but not Leo.

Geraldine "Jerry" Leo, a centenarian from Long Island, marked her 100th birthday in an extraordinary way by completing a five-minute plank at the Great South Bay YMCA in Bay Shore.

Leo is the pride of Bay Shore’s Great South Bay YMCA. She turned 100 this past April, but she says she doesn’t feel it. And she shows no signs of slowing down.

Jerry is the pride of Bay Shore’s Great South Bay YMCA. Other members of the aerobics fitness class, half Jerry’s age, watch in envy as the great-grandmother goes through her daily paces.

Leo is the pride of Bay Shore’s Great South Bay YMCA. She turned 100 this past April, but she says she doesn’t feel it. And she shows no signs of slowing down.

Leo is the pride of Bay Shore’s Great South Bay YMCA. She turned 100 this past April, but she says she doesn’t feel it. And she shows no signs of slowing down.

Leo is the pride of Bay Shore’s Great South Bay YMCA. She turned 100 this past April, but she says she doesn’t feel it. And she shows no signs of slowing down.