Sleeping on a new piercing will put pressure on the area, which can cause irritation, swelling, and damage to the healing tissue. This will slow healing and can cause issues such as piercing bumps and crooked growth.

Constant pressure on a healing piercing can lead to the formation of keloids or hypertrophic scars. These are raised and sometimes itchy or painful scars that can develop at the piercing site.

When you sleep, your body moves and changes position. This movement can cause the jewelry to shift within the piercing, which can disrupt the healing process and cause complications.