I wake every morning, like a lot of guys, with a great boner, and if I have the time I like to edge, but rarely cum. If I do I find it leaves me tired and slightly down. My motivation drops. I stay much sharper, mentally and physically, if I don't have an orgasm until night time. If I'm hitting the gym at some point in the day I also find any work out is easier and more satisfying if I've only edged and not cum.
My exception to this is if I have sex with someone during the day. Cumming from a good fuck doesn't seem to phase me..... morning, noon or night. I know the orgasm itself is the same biological function, but cumming from masturbation and cumming from sex seem to have totally different effects.