How often the best sex?

This is probably a lot of people have had questions in mind. The U.S.
scholars under the influence of age on sexuality law, summed up a 'sex frequency formula'
- the age of first sexual frequency = number * 9. that is their own
age, multiplied by ten digit 9, the product of ten digits from a sexual
cycle is the last number of days, and was due a bit of sexual frequency.


According to the U.S. Women's Health magazine, this formula
applies to adults over the age of 20, such as a 25-year-old man, his
(her) sex formula for 2 * 9 = 18,18 and 8 of 10 combination, that is for
him (her) sex frequency of eight times within 10 days of life, over a
frequency on which too frequently, may cause discomfort.

The sex chart is below, Take a look at the chart and see if it matches with you ? ...