The active part is the fister, the passive part is called fistee. In addition to fisting at home, fisting parties are also very popular within the fetish scene.
The anus can be exercised like any other muscle and can be stretched gently and carefully. However, too rapid penetration and/or forceful movements can lead to an anal fissure, a tear in the anal mucosa.
At sex parties, the use of new gloves is important for every new partner. Because when fisting, it is relatively easy to get Hepatitis C an infection that is transmitted exclusively via blood. Even the smallest, invisible quantities are often sufficient for this.
A transfer from HIV is theoretically conceivable with this type of game, but rather unlikely.
ICH WEISS WAS ICH TU is the gay prevention campaign of Deutsche Aidshilfe.