Usually I do not ask for help, but try not to overdo the back.   Answer,  find a way to use leverage, lifts, or simply an easier way to do whatever.    As in sheets of plywood, big back destroyers.   

A bit of exercise is good, an overdone exercise program is bad.  Leads to trouble.

At 86 in 2 months have been fortunate in the health issues.   Always worked hard but tried to be smart about it,  ala Lazyman.   


Ron