Trampling is the act of man laying down while a woman walks all over him. This can be a full body contact with him being basically used as a doormat or it can be focused on a certain part of man's body. Generally this part of the body is the penis and or testicles. For a lot of men this is a very sexually encounter. They desire to be forced down and then used as a source of entertainment for a woman or even a group of women. They enjoy being no longer treated like a human being but as an object. This is another fetish of power exchange. It can involve pain but for most men that are into trampling it is about the mental exchange more than the physical one.
While many Mistresses are forceful in how they deal with a trampling scenario for some it is more about the sensual taking over of a man's mind and body. They use their feet as a way of blocking out the rest of the world and focusing a man's full attention on them. Power exchanges are often about blocking out all the stress of the rest of the world. The men are craving a break from the high demands of their life and the women are there to give that to them. People often wonder why men or women of power crave sexual situations that are more intense. These people are of strong minds they desire something that will break through their normal. Strong sexual situations take them to a new sense of release. The vanilla sex is comforting like a warm fuzzy blanket but it is not enough to pull them to a different level of who they desire to be.
Trampling is not something a large portion of the population would be drawn to. It is for a small group that is craving different, unique and intense.