Short answer
The anal sphincters are muscles that naturally relax and contract, and gradual, gentle play with plenty of lube is generally considered low risk. Problems are more likely when people rush, force a size, or ignore pain. Sizing up slowly and taking breaks lets your body adjust comfortably. If you notice leakage, persistent pain, or changes in bowel control, talk to a clinician.
Read the full guideButt Plug Size Guide: How to Pick and Size Up SafelyButt plug size guide: how to read diameter and length, what size to start with, and how to size up safely and comfortably, one step at a time. Updated November 9, 2026 · All questions