It's risky, it could cause your cocoon of growth to burst. If you feel your cocoon of growth about to be damaged, use the Hankins Expulsion Principle. It's a fancy name for just shitting your brains out, Brian has mastered this, but a novice might need some Ex-Lax to help or some generic Mexican laxatives they get from their maid.
The important thing is that you don't leave the bathroom till it looks like an M-80 strapped to Hersey's chocolate sauce bottle has gone off in there.