While most abductees are unaware of any particular routine, many abductions occur in predictable cycles. Cycles vary depending on the age of the abductee. It is also likely that females are monitored or visited with greater regularity due to some Aliens' interest in females for reproductive purposes.
Age has an impact on frequencies of abductions.
As the child reaches puberty, the abductions may increase in frequency. Each abduction or visit may represent a periodic physical and mental examination of the young person. Abductions typically increase further when the child or teenager becomes biologically capable of reproducing himself or herself. Since males are capable of reproducing themselves anytime after onset of puberty, their monitoring schedule may vary. Females capable of reproduction may be visited or abducted on a regular schedule of every six to eight weeks.