http://www.thelondonpaper.com/cs/Sat...icleController

Experts said some couples seemed to believe men should hold their sperm "in" for days or weeks to improve its quality.

But the Australian research shows the chances of pregnancy are lower if a couple waits for long stretches between sex sessions.

A study found that getting men with damaged sperm to ejaculate daily improved its quality when couples were undergoing IVF.
There you have it, if you want great sperm (like the one in the FK logo), ejaculate as much as you can.

Fredi