Periodic abstinence is a natural method of contraception where the couples avoid or abstain from coitus during the period of the menstrual cycle when:
There is menstrual flow
The ovulation is most likely to occur
The corpus luteum is most active
The proliferative phase begins
periodic abstinence is a natural method in which couples abstain from coitus from day 10 to 17 of the menstrual cycle. This specific window is chosen because it is the period when ovulation could be expected and chances of fertilisation are very high (often called the 'fertile period') .
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