In reply to Jon Stewart:
I am on the edge of market town, so I don't see what things are like in urban areas, but I presume that the people who go to the gym normally may well go out for a run instead, especially with the weather holding good so far. (Wait until the persistent rain returns. Then We'll all be miserable, or pissed off at having to force ourselves out in the wet (yet I do that in normal times anyway))
I certainly see more people out exercising than normal. Yet I can see that this may only be, say, 20% of the population, who are out there.
It must be hard being in a one-bedroomed flat in a high rise in Manchester or Birmingham, being stuck in all the time, apart from shopping. Hence the sense in forcing yourself to go and do some exercise, but also the reason that you may well be right about psychological fall out from this, including suicide.
I'm not bothered about dislikes, but am curious as to why my original message got one.