It's not really related to the story, but training my facial muscles has been a low-commitment hobby for me. I noticed that I could do the 'Elvis Presley' lip c

It's not really related to the story, but training my facial muscles has been a low-commitment hobby for me. I noticed that I could do the 'Elvis Presley' lip curl naturally on the right side of my mouth, but not the left at all, which I found strangely irritating. So, for the next week or two I spent maybe 5 minutes after brushing my teeth practicing in the mirror. First scrunching up my entire lip, and spending time deliberately trying to get better isolation on my left side. It took a little while, but now I can curl my left top lip with barely a twitch of the muscles on the right side. Carrying on with this, I've gone on to train to wiggle my ears, arch eyebrows independently(still can only do it on the left side), and to deliberately control my orbicularis oculi muscles which comes in really handy to make a posed smile look warm and natural.. Or to express subtle skepticism/ disgust by flexing one in isolation of the other. I'm guessing actors and comedians probably do this a lot; haven't bothered to Google it. I don't think its so much about strengthening of the facial muscles as it is about paving the nerve pathways. Like physical therapy.