You are BREATHING wrong
👉 Book a ONE to ONE Call here - https://calendly.com/saxcasts/one-to-... I saw this video by @jackobreathwork and thought it was a nice demonstration of proper breathing. This is an issue all sax Players come across.
Try following the advice in the video without your sax and then try to attain the same level of lung expansion when you breathe through your mouth.
Let me know how you get on!