

Other comments mentioned squats and deadlifts but the upper back is important too. Pullups and especially dead hangs are great for countering the effects of sitting at a desk.
Once you get your grip strength up you can hang and just let your spine decompress. It feels great. You can also do the opposite and keep your core engaged (AKA hollow hold) to build strength.
I played sports growing up but never had a strong core until I did this in my 30s. It was kind of shocking because I could suddenly do things like V ups with ease which used to make me shake uncontrollably.
I think I’m hyperphantasic because I can play fruit ninja in my head and smell the juice as it lands on me.
It’s less fun when remembering an injury or every time one of my jokes hasn’t landed.