I took the time one year to learn a bunch of knot work and my ability to tie my shoes so they lay nicely has improved, even if I’m just using the same knot. But I also only tie my shoes once and never again, courtesy of elastic laces, so perhaps this specific tutorial isn’t as helpful for me as others. Still worth learning a knot once, tho though!
I like to call it "moving with intention" in my head. Proactive movement rather than Reactive.
Smooth is fast and fast is good - but there's nothing wrong with smooth and slow as well!
Hell, I only tie my shoes once a week if that! I must be a effing kung fu fool! Still, watching the video and especially reading the comments really made me laugh!
Honestly, such endeavors are likely excessive. Time spent optimizing your body's movement is probably time better used elsewhere. Nonetheless it is your time! And there's always dance, mime, drama, yoga, etc. And there are exceptions, e.g., in the military there's often a need to do something like "move 20 fully-armed men inside a door in 10 seconds" or "get 15 men to awaken, take their morning constitution and dress in 16 minutes."
My father told me the Marines taught them how to do everything, even wipe their ass. I don't know if that was part of inspection.
Some hobbies are really excellent for generalists, because you can apply the one learning-training method to any number of bizarre or intentional circumstances that life hands you. I’m currently working on ‘select heavier than average apples with a single toss and catch each at the grocery store’ and, no joke, some guy at the store complimented this. I’m sure they were hitting on me but they noticed. Made my day. It’s the hobby that keeps on giving. (I have so far only dropped one apple and, yes, I bought the poor bruised thing.)
Other fun hobbies in the category: Diagnostic guessing, Balancing stuff, Vehicle operation, Packing efficiently (rather than most compactly), Knots (which are critical to textile and bodily repair both), Folding (or as Calvin might call it, dimensional transmogrification), Echolocation mapping (you can practice while sitting in a cafe).
At the core of this is learning how to learn, and then dedicating yourself to doing that somehow, no matter how pointless whatever hooks your attention might seem to others. I figured out at one point how to alter my visual perception frame rate to slow down and stall, just for a moment, a spinning (on high) ceiling fan’s blades. I can never get them to stand perfectly still but insomnia is cruel and the nights are long, and it’s fun to imagine what my brain is doing to brainwave sync rates across my visual cortex to make this work. (If seizure-prone, maybe don’t try this alone.) Unexpectedly, even this has had a practical value: when a passenger in trains or cars, I can consciously relax my eye muscles now and let the landscape motion blur by rather than saccade-focusing constantly. Hooray!
Every useless hobby skill has an unforeseen opportunity to be valuable :)