i think these are beginning signs of cardiovascular disease. this will effect kidney function, allowing too many toxins to get stuck in the feet and lower extremities. does he notice any edema? the toxins are again able to travel throughout the body after a couple of hours of being prone.
make sure the kidneys are flushed with a salt push and plenty of salt and water through the day. potassium may have to be supplemented as well. do the Water Cure (which is the salt and water). take cayenne and turmeric to rebuild the heart.
everybody should be on at least 100mg of iodine. it makes everything work better.