Who was the earl of derby who said those who don't find time for bodily exercise...?

The Earl of Derby who said, "Those who don't find time for bodily exercise will have to find time for illness," was Edward Smith-Stanley, the 13th Earl of Derby. He was a prominent British politician and a leading figure in the Conservative Party during the 19th century. His emphasis on the importance of physical fitness reflects a broader Victorian interest in health and well-being.