Their eyes may roll to the back of their head, they may also sweat, the heart rate is fast, the pigment in their face may be pale or red, shaking or trembling.
Explanation:
I'm not exactly sure if you need a specific answer or a paragraph, but if so comment it to me and I will answer!
Fainting is a temporary loss of consciousness. If you're about to faint, you'll feel dizzy, lightheaded, or nauseous. Your field of vision may "white out" or "black out." Your skin may be cold and clammy. You lose muscle control at the same time, and may fall down.
