heat stroke and hypothermia.

• Its an uncontrollable increase in your body temperture.
• It can lead to dehydration.
• Dehydration stops you from sweating therefore increasing the body's core temperature even more.
• If your body temperature is not reduced the ending can result in death.  

Causes:

• Excersising in very warm conditions.
• Very high humidity.
• Dehydration.

Symptoms:

• Confusion.
• Red/dry skin.
• Low blood pressure.
• Convulsions.
• Fainting
• Rapid heartbeat.

• Occurs when your body is exposed to low temperature.
• Your body can not replace heat as quickly as it is lost, this also can result in death.
• Common cause is when core body temperature falls below 35 degrees celcius.

Symptoms:

Grey skin colour.

Memory loss.

Shivering.

Slurred speach (hard to understand speach).

Confusion.

Loss of coordination.

Cold skin.