Is it okay for single people to transmute the sexual energy throughout their entire day, or at several prolonged moments at least, using imagination and willpower to direct it up to the brain? Or should this practise be reserved for pranayama and vajroli mudra exclusively? I ask because I realize the necessity for single persons to change their sexual system to flowing inwards and upwards as Samael said, to avoid wetdreams and the involution of semen. However, is the system tied necessarily to the breath, and should be reserved for one's asana, or can one simply focus on it with one's will until it is the natural organization of the body?