This is a retarded question, but some guys at work were debating this on break. Some of them thought that it might lower your levels while others said it wouldn't.
I tend to think your levels are not impacted yet I am not 100% sure. I could not find any thing on the subject when I googled it but perhaps it is not something tested.
Oh it does not have to be masturbating it could just be having sex too. I forget how it came up but something to do with the endorphins released during your release lol, and how often guys get more agitated if they have not got it in a while.
Any input from you guys?