We all have by our parents, and they were wrong. A 45° angle is ideal because your spine isn’t being compressesed by gravity as much. Just think about it. It doesn’t take a genius to figure out simple physics.
FWIW, I did have a source, but unfortunately I can’t find it at the moment.
What kind of crack is that? Nobody has ever been told to lean back in a chair. I have however been told to sit up straight.
We all have by our parents, and they were wrong. A 45° angle is ideal because your spine isn’t being compressesed by gravity as much. Just think about it. It doesn’t take a genius to figure out simple physics.
FWIW, I did have a source, but unfortunately I can’t find it at the moment.