I am glad you brought it up (no pun intended). I have done it on a 4, 5 day abstinence, but only a few times. Once I went with just over a week without self-pleasure and I have to say the pleasure I felt during the session was incredible but it didn't last too long. I had to stop her mid bj. The shortest period of restraint for me was about half a day ( I jerked off the night before).
I am a bit sex obsessed (like many of you guys, and girls too, i hope) and I have to unload it every two three days otherwise I go crazy. Plus, being on PERB and Leolist from 9 5o 5 makes it worse. But 2, 3 days works pretty good.