A_A, sympathies with Mrs AA but the crucial bit in your message was
and they have time in the day to do it.
.
True there will be many moaners who could, without much effort, make time. There was a time when lineys, between waves, would play volley-ball. It took no space and could be done at the drop of a ball and they could return to work in moments.
With leaning this sort of 'free-time' would have been redeployed to some other more useful employment. As 'free-time' was absorbed establishments were cut. OOA then impinges on manning too so what is left is stretched.
The culture change that is required is to raise the importance of fitness above the diversions such as the flypro.