In order to cope with modern day life (COL crisis, housing crisis, welfare reform to name a few things) you need a certain amount of privilege. It's all well and good saying take yourself out for a walk or do pilates, but if you live in a concrete jungle ridden with crime, or you are homeless in a B&B with zero space you aren't going to feel like doing either of these.
I recently became homeless, I've been privately renting for 20 years. My LL sold the house, despite applying for circa 60 properties I haven't been accepted by one. I have a disabled child who needs 1:1. I had to apply for UC which has been an absolute nightmare. I've gone from a lovely house in a tree lined street to a tiny flat in a very deprived area with lots of antisocial behaviour. This all has caused me so much stress, it has had a very physiological effect, my body is aching, chest and throat always feeling tight, reduced appetite etc. I am coming from a very privileged position, I have enough money in the bank to cover 3 months rent, a car, I'm educated and can navigate the UC system fairly easily. So if I feel mentally/physically unwell, how about those who have none of the above?