Sexual thoughts coming with full pace to silent mind I'm being very mindful and aware nowadays.  My mind is now very much quite and I am able to watch handful of thoughts in day to day life.  The problem is at a particular instant of quite mind, sexual thoughts come with full vigour.  Don't know why. 

Is there any particular reason of sexual thoughts to come vigorously to nearly quite mind?
Is there any particular reason of sexual thoughts to come vigorously to nearly quite mind?

Thoughts arise and disappear on their own. If you are plagued by any particular thought, consider that relishing is the root of suffering. Find that delight, look at it and simply understand that "this is not mine, this is not who I am, this is not my self." This simple declaration will loosen your grip on the thoughts and they will disappear. Thoughts and feelings persist because there is relishing. Disavow the relishing and the thoughts and feelings pass like clouds in the sky. Be mindful of your breath as you do this. The breath is very much a part of your life. The thoughts simply come and go.