I can always tell when I have a good libido by my level of attraction to females. If I find girls attractive, but don't necessarily think of them in sexual terms then I know my libido is low. If I find really fit & athletic girls attractive plus I think of them of sexually then I know I have an emerging libido. Finally, if I find certain women I normally wouldn't look at attractive while thinking of them sexually then I know my libido is strong. Sometimes I'll be standing in a place minding my own business when I start to notice women of all sizes, shapes, and ages. It doesn't even matter that under normal circumstances I would not find these women attractive, during that moment and with that libido they are extremely tempting. That feeling is very rare for me, but it's a feeling I'd love to have again and again. What does a good libido mean to you? How can you tell when you're sex drive is right where you want it be? Just curious to see what everybody else's experience is.