Here is an interesting article on breathing for the high register from Roger Ingram, former lead player for Harry Connick Jr amongst others.
I'm currently reading Cmdr Chris Hadfield's 'An Astronaut's Guide To Life On Earth' which details his space adventures, and the intense preparations for those adventures. How does this fit in with a blog about trumpeting? Well the thing is, it's all in the preparation. The old adage goes 'Fail to prepare, prepare to fail', but to Hadfield and his colleagues, with billions of dollars of United States Military hardware in their charge, failure simply isn't an option. As musicians, we're in the fortunate position where sometimes, we can cut ourselves some slack when things go wrong, which lets face it they do. But, as the astronauts prep show us, meticulous attention to the smallest details is essential for success. Sweat the small stuff.