As many of my students can attest, I spend a lot of time in private lessons talking about hand position, particularly about how to have the most natural, ergonomic configuration of your hands, wrists, and arms while playing the flute.
I do this because it's easy to get in the habit of using a harmful hand position, and the damage isn't noticeable while it's happening. By the time carpal tunnel syndrome, tendinitis, or an overuse injury makes itself evident by causing pain, the therapy and possible surgery needed to correct it is costly and time-consuming. It's much better to spend the time early on developing good habits.
This is why students deserve dedicated, vigilant teachers. When beginners start to learn an instrument, they don't usually know enough about it to be able to discern how the way they're holding it will affect their muscles ten years down the road. A great teacher will show by example and constructively correct a student's playing position so they can enjoy years of pain-free music-making.
So if you ever come to study at the Woburn Flute Studio, you'll hear a lot about posture. But you'll also have a teacher who will make sure you have the knowledge you need to play without pain.