For years I played around with Tantric Yoga/Semen Retention, but never seriously enough to get much out of it. Last year I decided it was time to grow up; "it's now or never"; and decided to go 15 months. I actually ended up abstaining from February 22, 2011, through July 15, 2012. Now I have experienced the power that comes with long-term retention, what it feels like to cum after so long (positive and negative), and the after effects, and I really want to commit to permanent abstinence. That's not to say though that it'll be easy.