Take frequent breaks. Proteins are an example. Severe cases also include swelling, blisters, fever, and headaches. Heat cramps Heavy sweating and painful spasms, usually in the legs or abdomen. Heat exhaustion Weakness and excessive sweating.
Skin is cold, pale and clammy.
The pulse becomes rapid. Fainting and vomiting are possible. Hot, dry skin and a rapid and strong pulse. Unconsciousness is possible. Should someone succumb to heat, immediately move him or her to a cooler area and seek emergency medical assistance or bring the person to the hospital.