Jimmy Carter turns 96 today. Here are 8 incredible things he still does that prove age is just a number.

Jimmy Carter is showing no signs of slowing down.AP/Mark Humphrey

• Former President Jimmy Carter, the longest-living American president in history, celebrates his 96th birthday on October 1.
• The 39th president remains an active member of the human-rights organization he co-founded and still enjoys a variety of hobbies both old and new.
• He still writes books, teaches Sunday school, and volunteers.

Jimmy Carter turns 96 on October 1 — he's the oldest living American president and the longest-living American president in history.

For his birthday, Carter plans to spend a quiet day at home in Plains, Georgia, with his wife Rosalynn, according to the Atlanta Journal-Constitution.

However, although he has spoken out about being "absolutely and completely at ease with death," the 39th president of the United States shows no signs of slowing down.

Since leaving the White House in 1981 after a single term, Carter has, among many other things, won a Nobel Peace Prize, written more than a dozen books, secured the release of an American hostage in North Korea, observed 109 elections in 39 countries, and — with his own hammer and tools — helped build and repair more than 4,300 homes in 14 countries for Habitat for Humanity.

A human-rights champion, philanthropist, traveler, teacher, and avid outdoorsman, Carter is not just still actively involved in his many passions and hobbies, he's also picking up new ones.

Here are some of the incredible things Jimmy Carter does in his 90s.