"At 74, I could still do 30," Contactmusic.com quoted the "Dirty Harry" star as saying.
Eastwood is adamant he will remain in good shape, unlike other men his age who take a laid-back approach to exercising.
Eastwood said: "I work out daily and I like it. In 'Million Dollar Baby', it was great because we had a gym. Everyone would see who could do the most dips on the dip bar and I did the most."