You need good posture..I'm not very good at lowers at all but when you have bad posture, that can cause your back muscles to tighten and then pull on your other muscles, which tightens your other muscles and they can lead to bad muscle spasms which could stop you from practising lowers for a day maybe..I was told by a lot of physio's and ciropracters so it's no lie ha
Hmm, I'm not hating. But after seeing in excess of 10 physios trying to get all my various injuries sorted out, I don't think they have any idea on the muscles used for freestyle. My posture is fucking terrible. Cant stand up straight for long periods of time without aching, hunch over at the dinner table etc. But I wouldn't say my style is bad. In relation to the video Max posted, I'd say that demonstrates bad hand eye coordination rather than a bad posture. Learn how to freestyle properly, starting with the basics, and your style has the potential to be good, bad posture or not.