where do calluses on your feet come from
Callus A callus is an area of thickened skin in response to repeated friction, pressure, or other irritation. Rubbing that is too frequent or forceful will cause blisters rather than allow calluses to form. Since repeated contact is required, calluses are most often found on feet because of frequent walking and incorrectly fitting footwear. Calluses are generally not harmful, but may sometimes lead to other problems, such as anskin ulceration or infection or cause the sufferer to try and offload the effected painful area, which can place excessive stress on the asymptomatic side.
Matthew 7:7–8 The common English expression "Seek and Ye Shall Find" is derived from this verse.
Arch The ancient Romans learned the arch from the Etruscans, refined it and were the first builders to tap its full potential for above ground buildings:
Alonso Álvarez de Pineda