Erector spinae muscles

The video explains how muscles work to maintain an upright posture, focusing on the erector spinae muscle group, which includes the iliocostalis, longissimus, and spinalis muscles. It provides a mnemonic to help remember these muscle names: 'I like standing.'

Why is it important for our muscles to work hard while we are standing?

What is a simple way to remember the names of the erector spinae muscles?