Do you have a teenager in your home who constantly texts? Ask them to flex their thumb muscle — the one that looks like it's a bicep for your hand (I believe it's called the abductor pollicis brevis). It's probably way beefier than yours!
I've been cartooning since I was a teenager, and have been published in magazines ranging from AASHTO Quarterly to the New Era and several other periodicals, trade publications and newsletters.
Feel free to contact me with comments, complaints or questions!