Why do your lips go numb while play trumpet?
The reason a persons lips go numb when playing trumpet is
usually because they pull back on the trumpet, stopping the blood
circulation to the lips. If you find that this is the case, be
conscious of this when you practice. You might find that initially
your range is somewhat reduced but with regular practice, the
muscles that make up your mouth will become stronger and you will
be able to play higher than you could when you were pulling back on
the trumpet.