Complications

Click the icon to see an image of the dangers of heatstroke.

Frostbite and Hypothermia

Precautions also need to be taken in cold weather. When exercising in winter, dress in layers, including gloves and socks, which create insulated air pockets that trap heat. In cold weather, wear shoes with less ventilation than those worn in the summer. Fingers, toes, ears, and nose are most susceptible to frostbite. From stinging or aching, frostbite progresses to numbness. Fingers and toes may become white. Soaking the extremities in warm water can help, but only once there is no risk of refreezing, since a second bout of frostbite after thawing can accelerate tissue damage. Hypothermia can be life threatening and can occur even after prolonged exposure to temperatures that are above freezing. The condition is characterized by extreme fatigue, mental confusion, apathy, and a lack of coordination. The victim should be warmed as soon as possible with blankets, body heat, and warm fluids.