Sit ups or crunches. Keep the abs in good shape so good posture is easier.
Lift smaller weights. I had a nice surprise recently with arm weights. Leave enough time so you can recover. 50? I was doing like 5. Ten at the most.
You have to have enough energy to recover from physical exercise though.
Now how of you just licked your elbows?There's a reasons feet and noses are far apart.
Maybe you neeed to try to play computer games or carry groceries with your fingers.