Sit Up Straight

Hello, For some reason sitting up straight is escaping me. Does that mean that my core is weak? Or I am just not noticing? Leroy is even telling me to sit up from time to time. It seems we have switched roles. I do not like it but seem not to be able to solve this issue. I do not do as many exercise as I used to. Leroy is doing more than he used to. Perhaps that is strengthening him and I am getting weaker. Somewhere I have to find the will to work on it. We both notice that it is harder to take up bike riding when we have been away from it for a while. Guess the same is true of all other movements as well. At least we are both getting many steps. Even there too, I notice that I am not as straight as I could be. Some of that is that I do not want to fall so I pay close attention to the ground in front of me. Some of the sidewalks are uneven. It seems it could be easier just to take a pill and solve it all. Life does not work that way as I should know from all the years of observing. I do notice that I cannot lift very heavy things. At church there are nine half gallons of milk in a container. I can shift them between equal surfaces, but cannot life them from the floor to a higher place. They would equal about 36 pounds. I remember lifting children that weighed that amount. It was just a daily part of life. Yesterday we cleaned the choir room at church, but that did not require much heavy lifting, just moving chairs. Paula