I've been lucky enough not to have suffered from a bad back in my 53 years on the planet, but recently I've been feeling more achy than ever : I have a very physical job so it's only natural given my age, I guess. It's the small of the back that bugs me some days - most other "bits" you can stretch out, can't you ? But that bit is hard to reach. Jeanna is a trained massage therapist so she helps with her "thumbs of steel" but sometimes the best thing I've found to do about it is to lie on one of these :
I bought one from Tiger (or Flying Tiger as they may be known now, I'm not sure). It's a Danish chain of shops that sell stationery and bits and pieces for the house. The one pictured isn't quite the same, but it's a strong plastic cylinder made for exercise, that has a thick rubber coating. I put mine on a yoga mat then position it in the small of my back as I lie on top of it. I then lift my legs in the air so I make an L-shape with my body. Then just site like that for five minutes. Do it up against a wall if it makes it easier. Grab a book or your phone and see how long you can last ..
It really helps as it allows the weight of your own body to be used to push the spine back into shape.
I don't know if it's scientifically sound but it works for me
The one I got cost £9.99 from
https://uk.flyingtiger.com/en-GB
(not the best website - no online shop)