Man therefore gets his vitamin A by eating plants which are rich in carotenes or by eating those parts of domestic animals which are rich in the vitamin itself: liver, butter and cream from milk; egg yolk; and cod-liver oil.
If the vamp is too loose, your heel may slip out of the shoe, while a vamp that is too tight can cause toe pain or numbness. Counter. The heel counter is the back of the shoe that holds the heel in place. A stiff counter offers greater heel control and stability.
The Importance of Heel to Toe Drop in a Running Shoe June 4, 2014 / queensborotri Something to pay attention to when buying running shoes is the heel to toe drop. This can be defined as the offset or difference between the height of the cushion in the heel in comparison to the height of the cushion in the forefoot. Traditional running shoes tend to have a high heel to toe drop, most commonly around twelve millimeters or so. This type of configuration almost forces a runner to strike heel first, which can cause significant pain and injury due to the repetitive shock associated with heel striking.