The type of clothing you wear should be light and porous. Heat-trapping clothing predisposes you to heat exhaustion and dehydration. Also, for walking or jogging you should wear shoes that foster stability and absorb shock. Shoes are now made to suit different types of feet and their needs. Exercising without proper preparation in cold weather.
Cold temperatures cause the skin's blood vessels to constrict in an effort to conserve body heat.
This increases the heart's blood and oxygen needs because it has to beat harder to pump blood through narrower blood vessels to meet the body's needs. The aim of dressing for cold weather is to adequately insulate yourself but at the same time avoid trapping body heat and causing excessive sweating. Wear layers of clothing so that you can shed layers if you get hot or put it back on if you get cold. Wear a hood or cap and gloves because the blood vessels in these areas do not constrict in cold weather to conserve heat and you will lose body heat in this way. Exercising in polluted air.