1. Diet soda
    I actually kind of hope this is the way. We'll laugh at the irony.
  2. Motorcycle
    Knowing Travis it would only happen because he swerved to miss a squirrel.
  3. Weightlifting Accident
    Probably a barbell to the head or neck
  4. Shock from badly setup guitar petals
  5. Heart attack from watching too many insane Odell Beckham, Jr catches.