Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Perineal Injury in Males ?
    ### Response:
    Chronic perineal injury most often results from a job-or sport-related practicesuch as bike, motorcycle, or horseback ridingor a long-term condition such as chronic constipation.
                
Bike Riding
                
Sitting on a narrow, saddle-style bike seatwhich has a protruding nose in the frontplaces far more pressure on the perineum than sitting in a regular chair.
    