Hi Mitch, men's sheds are certainly popular here in Australia aren't they? We have one here in Murray Bridge and I believe many men attend. I did think John may like to give it a 'go' but at the present time we are focussing on one of the local gyms which is an amazing place. It is very inclusive and welcomes all ages, genders, abilities etc. The instructor has a very low key program for John which lasts for about 30 minutes and gives him the opportunity of working one on one which is most helpful as I suspect he would be too distracted if he was in a group setting. Its also good for socialising too - ticking another of the boxes !
Cheers Jillza