Mendip, sorry old sport but you look like you’re packing too much blubber.
You do not want to be carrying that lard into your 60s and it’s not conducive to good posture which in turn will strain your musculature as you adapt your gait to carting the fat about.
Once you sort out your ‘ammer and tack, start a diet regime and get to working out improving muscle tone.
You guys with your shift working patterns tend to eat crap in large quantities and binge drink too much alcohol back onshore.