There are no standard norms for each activity. Hence the answer perfect.As a rule of thumb both partners should enjoy it. If both are satisfied sexually and both enjoy good relationship, whatever they are doing is perfect. You don't depend on numbers.a
I don't understand your answer. Can explain more better?
Hi , 1/ it's down to the individual
2/ every time you have sex with partner
3/ delay climax
4/ again down to the individual / take care