Anal depth training is a types of anal training where long objects such as a dildo are pushed deep into the anus. How deep can be penetrated by many factors, so there is no such exact answer to the question. To how deep you penetrate affect, inter alia, the receiving-side experience, exercises, knowledge of the body, as well as physical characteristics. Always remember to exercise caution when you practice Anal Fisting or Anal Depth Fisting or Training Know what you are doing. So read the Guides and Safety guides before going to the exercises.