Why was Jimmy Carter showed uncommon vigor?

Jimmy Carter exhibited uncommon vigor during his presidency and post-presidency due to his relentless commitment to humanitarian efforts and public service. His active involvement in initiatives like Habitat for Humanity and his work with the Carter Center focused on global health, democracy, and peace, showcasing his dedication to making a positive impact. Additionally, his resilience and strong work ethic have allowed him to maintain an engaged lifestyle well into his later years, inspiring many.