Before going Hollywood, Eastwood worked manual labor jobs including stints at a steel mill, as a hay baler and as a lumberjack. And in the 1950s, he was drafted into the army: "I'd always done muscle-training exercise," Clint said to Muscle and Fitness
a few decades ago, "things like chins, clips and calisthenics, but it was when I was in the Army that I discovered the weights—the kind of training you'd call bodybuilding today." While he wasn't trying to get jacked, Eastwood wanted to stay fit and went on the record during Rawhide
warning people to stay away from carbs and rich desserts. He was famously fit
enough to perform his own stunts (including the famous scene in Dirty Harry
when he jumps from a bridge to the roof of a moving school bus).