Seong Chin

Moveo Ergo Sum/Happiness is 'perceived' energy efficiency/Internist interested in biology, behavior & movement

[Seong Chin @sc2910]

An assumption of frictionless slide is not going well with a cycloid.
A cycloid has a contact point on the ground & friction makes the bead/ball rotate.
G pulling w/ friction rotates bead/ball.
Quicker initial rotation (accel) by front void under G makes brachistochrone curve.

[World of Engineering @engineers_feed]

Brachistochrone curve.

[Seong Chin @sc2910]

Hunting/escaping can't be choreographed.
Top-down cerebral command won't work d/t sensory-motor delay.
Accurate prediction via Bayesian selection is necessary.
Errors in Bayesian selection/prediction can be mitigated by environmental control.

https://t.co/jZSyLLmnV6

[Nature Chapter @NatureChapter]

A rare and electrifying moment on the plains, as a cheetah explodes into full speed in pursuit of an impala an extraordinary display of precision, power, and instinct

[Seong Chin @sc2910]

Heart can pump only what it receives.
Venous return/VR mainly by wt-bearing activity & quiet breathing.
Resp muscles do dual-function: resp/posture.
Physical activity, if well-engaged, dual fn can be maximized for wt-bearing/resp suction pump: VR.
#Lactateshuttle for brain/heart.

[David Bishop (🦋 also bluespotscience.bsky.social) @BlueSpotScience]

Stoked to already have > 15 submissions to our Special Collection:
Physical Activity & Mental Health: From Mechanisms to Global Implementation https://t.co/mMhbxfDrpJ
Thanks to our amazing team of guest editors - @BrendonStubbs23 @KMachaczek @simon_rosenbaum & Dr.P.S.Indu

[Seong Chin @sc2910]

Rhythmic music helps predictability.
W/ practice, easier to do this wt-bearing action: quieter brain & active muscle pump to ⬆️venous return/⬆️cardiac output w/⬇️systemic arterial resistance.
⬆️ tissue perfusion.
⬆️Predictability for mental health.
https://t.co/0Y9GvzOXu7

[🎼🌺Music Love♥️ @ThoNg676733]

Never get tired of watching these guys dancing to "Staying Alive" FANTASTIC!!!

[Seong Chin @sc2910]

@TheLancetRheum @ScottUhlrich @UtahMech Visual guidance for accurate motor action is important in daily activities including gait, but our modern day paved environment would limit visual contribution.
Unlike barefoot walking in natural environment.
https://t.co/GJheXfNdBS

[Seong Chin @sc2910]

@TheLancetRheum @ScottUhlrich @UtahMech W/ ground marks, like numbers on treadmill belt by light in a predictable way, can induce visual attn to the ground.
Biomechanical parameters can be better w/ visual attn, like hammering a nail w/ visual guidance.
(+) energetics seems from visual attn.
https://t.co/EhaSUxDjuG

[Seong Chin @sc2910]

@Philip_Goff ⬆️brain entropy can be serious for optimal motor control w/ lasting impact: functionally/structurally.
Uncontrolled skeletal m contraction is dangerous d/t rigor/contraction band/necrosis.
Perfect sensory integration/motor response needs to be preserved.
https://t.co/By0HtIAzBx

[Nature Portfolio @NaturePortfolio]

A study in Nature Communications tracks the induced anatomical and functional brain changes detected one hour and one month after healthy adults were given their first psychedelic experience, 25mg psilocybin. https://t.co/yYuaL5hcPR

[Seong Chin @sc2910]

@Philip_Goff Hallucination/H can be protective.
Auditory H to block chaotic/stiff motor response from poor visual guidance.
Visual H to provide reference for motor response.
Pseudo-H to limit stiff motor response from knowing 'not-real', so trunk muscles can rest & work for resp venous pump.

[Seong Chin @sc2910]

A simple appetite suppression won't be an answer to prevention of obesity: eating helps circulation via vagal nerve stimulation, so brain fn.
Focus for obesity tx needs to be shifted to mechanics of stress tone, not suppression of appetite or metabolism.
https://t.co/IDz61Km3ce

[Seong Chin @sc2910]

Human interaction & adaptation to a new environment can be stressful.
Monkeys & humans developed a delicate torso control a long time ago.
Stiff torso from stress limiting ventilation (resp venous suction pump) can be harmful.
Softening torso to enhance pump by various methods.

[BBC News (UK) @BBCNews]

Monkeys 'learn to eat soil to cope with junk food' https://t.co/z7xQ5blAG0

[Seong Chin @sc2910]

Smokers often maintain oral 'suction' behavior when cigarette already left their mouth: enhanced inspiratory suction pump for ⬆️central circulation.
What can replace smoking habit for next generations w/ more stress & anxiety?
⬆️Eating for ⬆️vagal tone?
https://t.co/QBRjlRdeAW

[BBC News (UK) @BBCNews]

Smoking ban for people born after 2008 in the UK agreed https://t.co/12Da2ZVzJZ