Nice testimonialHahaha..the low carb lifestyle takes his tolls again. Actually I can confirm this phenomenon. Before I heard of Ray Peat I had lots of problems with calluses on my feet. I had an electrical callus remover which I used every few days in addition to rubbing oil on it every evening before bed - all with no avail whatsoever.
Today there is nearly no callus at all and in general the skin on my feet is very soft - something which I only recently discovered to my delight .