Does playing the French horn makes you have big cheeks?

No, playing the french horn does not make your cheeks bigger. Puffing out your cheeks when you play can cause them to grow in size over time. But this can happen with any brass instrument. read more

In fact, in order to play French horn and other brass instruments correctly you should never puff out your cheeks. The air is pushed from your diaphragm. This is a muscle in your stomach that pulls and pushes on the lungs to fill and empty them with air. read more

If this applies to your horn, blow air through it. Then, take the mouthpiece out and turn the entire horn like a steering wheel. The "water" (spit) should come out of the bell. You may have to do this several times. If you’re not sure you want to play the French horn long-term, renting might be a good idea before making the investment of buying. read more