If you really want to knock out for eight hours of uninterrupted bliss, the best sleep aid isn’t in your medicine cabinet — it’s in your nightstand. Put down the melatonin and pick up a vibrator, because we’re no longer counting sheep — we’re counting orgasms. It may be Sleep Week, but the “sleepmaxxing” crowd is only now just catching on to what us hedonists have known for some time: a quality climax is the ultimate biological “off” switch. According to recent research published in the Journal