Maimonides stated clearly:
“As long as a person exercises and exerts himself and does not overeat — no illness will come upon him.”
Daily physical movement is, in his eyes, the key to health and longevity.
He didn’t speak about strenuous workouts, but about consistent daily movement — walking, physical work, maintaining flexibility.
A person who sits all day and doesn’t move, Maimonides wrote, “will suffer all his days.”