eli5 why the hell are spineless chairs/stools impossible to sit in for more than an like ten minutes ?! Why is it so hard? Do i use the back rest that much?

Question

It doesn’t even help that my posture is garbage. Do I have a weak back or something

In: 2

Answer 1

Probably you have a weak core/back. Strengthening it will let your muscles work longer and with less perceived effort so you will not need to depend so much on a chair back.