I'm also a latecomer (no pun intended!) having just signed up for this site. However, I started on May 6, so I am up for extending it as much as possible - 10 day challenge it is. Thus far, by day 6, I'm getting horny a lot and my libido is high. I think about sex a lot. I'm not acting on this of course and to be honest it feels quite nice to be getting slightly aroused in a normal way.