The first time I used dumbells, I thought that my shoulder was going to tear apart. It was so heavy. I could not imagine how my father can still carry it. He is quite old already, but he can still use the dumbell with ease. Maybe that is the secret behind his wonderful body and his amazing fitness. Aside from his wonderful body, he also has great strength and he can endure very tiring situations that I surely cannot take. I am very impressed with the way he has maintained his fitness. Dad is an epitome of a person who values health.