Man getting motivated is hard

When I was much younger, 64 now , I went with my grandfather to a local lumber mill to get some things and an older man who worked there was shoveling sand into a pick up , I'm guessing he was in his late 60's , my grandfather started talking to him and he said that he works just as hard as he always did but he just doesn't get as much done as he used to , makes perfect sense now.