If you follow Western cultural norms of wearing shoes all day everyday, by the age of 39 your toes are a pale yellow compared to your fingers. If you then give up wearing shoes, that stimulates the blood circulation in your feet. After a year or
two your toes “pink up” and match the colour of you fingers. I interpret fingers as providing a good reference and conclude that shoe-wearing results in poor circulation in the feet and that going barefoot restores normal levels of circulation.
Trying to make sense of my own experience of the way that the sensation of walking on rough surfaces has changed over the years leads me to this speculation. The body knows that poor circulation is a problem, injuries may be slow to heal or get infected, and has a built-in response: up-regulate the pain receptors to give some behavioural protection to the body part that is at risk due to poor circulation. Take off your shoes and walk on a rough surface and this protection kicks in. It feels painful, encouring you to put your shoes/armour back on.
Continuing the speculation. Give up shoes. Circulation improves up to normal. Lagging this, pain receptors get down regulated back to normal. The stimulus provided by rough surfaces gets reinterpreted as “rough” not “painful”.
I prefer my oxygen-level account over callous and flexibility.
Flexibility is a real issue for some. Your feet have “set” into immobility. When you start going barefoot you get characteristic “physiotherapy” type pains from mobilising stiff tissue. I’ve never liked shoes (I was always barefoot in my own home) and didn’t really have that problem.
Callous thickness is very variable. Also “callous” is not the right word. My experience was that one year in I had developed callous, meaning the hard white skin that you get where your shoes rub. I had problems with the callous cracking. Two years in the skin on the soles of my feet had changed some more and was leathery. Long distances on abrasive surfaces can wear away your skin making your feet tender. The rate of skin growth increases to compensate. But the adaption of the rate of skin growth always lags, so you can end up with thick skin, especially if you abruptly stop walking long distances on abrasive surfaces. My experience was of lots of variation in skin thickness, but a much less variation in the processing of sensation and its change “painful” to “rough”.
I generalise my personal experience as follows.
If you follow Western cultural norms of wearing shoes all day everyday, by the age of 39 your toes are a pale yellow compared to your fingers. If you then give up wearing shoes, that stimulates the blood circulation in your feet. After a year or two your toes “pink up” and match the colour of you fingers. I interpret fingers as providing a good reference and conclude that shoe-wearing results in poor circulation in the feet and that going barefoot restores normal levels of circulation.
Trying to make sense of my own experience of the way that the sensation of walking on rough surfaces has changed over the years leads me to this speculation. The body knows that poor circulation is a problem, injuries may be slow to heal or get infected, and has a built-in response: up-regulate the pain receptors to give some behavioural protection to the body part that is at risk due to poor circulation. Take off your shoes and walk on a rough surface and this protection kicks in. It feels painful, encouring you to put your shoes/armour back on.
Continuing the speculation. Give up shoes. Circulation improves up to normal. Lagging this, pain receptors get down regulated back to normal. The stimulus provided by rough surfaces gets reinterpreted as “rough” not “painful”.
I prefer my oxygen-level account over callous and flexibility.
Flexibility is a real issue for some. Your feet have “set” into immobility. When you start going barefoot you get characteristic “physiotherapy” type pains from mobilising stiff tissue. I’ve never liked shoes (I was always barefoot in my own home) and didn’t really have that problem.
Callous thickness is very variable. Also “callous” is not the right word. My experience was that one year in I had developed callous, meaning the hard white skin that you get where your shoes rub. I had problems with the callous cracking. Two years in the skin on the soles of my feet had changed some more and was leathery. Long distances on abrasive surfaces can wear away your skin making your feet tender. The rate of skin growth increases to compensate. But the adaption of the rate of skin growth always lags, so you can end up with thick skin, especially if you abruptly stop walking long distances on abrasive surfaces. My experience was of lots of variation in skin thickness, but a much less variation in the processing of sensation and its change “painful” to “rough”.