Thank you Dodger.
I walk several miles per day. The in room circuit is about 16 metres, so it's 100 laps per mile.
I also do some push ups and sit ups, however it would probably take some calorific restriction to end up with a completely flat tummy.
However, I'm not going to take calorific restriction to the level practised by another board member in quarantine: https://christianpfc.blogspot.com/20...-cambodia.html
I suspect prisoners in Tol Sleung ate more than that.

Once I get out, the plan is to spend a few days in Bangkok, then head on down to Pattaya. After that, there's no plan, but perhaps it's time to go back to the south of Thailand.