Fainting is not in itself a serious condition but it is a fairly common one and it is often caused by the very things implicit in BDSM, such as pain, excitement, physical activity in warm atmospheres, or long periods upright without movement. A faint is the result of a lack of oxygen to the brain, either through lack of sufficient oxygen itself or of blood flow to carry the oxygen.

So let us consider what we can do to ensure safety and enjoyment