Generally speaking na... guys over 50 are not as fit as younger guys naaaa...
Most men over 50, unless if they are healthy & exercise regularly...
Their physical body will not support having a vigorous SEX session naaa...
Think about it for instance...
Sex has many of the same effects on the body as an intense workout. During sex, your heart races, your metabolic rate increases, you burn calories and stretch and strengthen muscles. Sex has also been shown to boost the immune system and provide stress relief, just like a good cardio session.
The "average" sex session lasts about 30 minutes and burns between 50 and 100 calories. It doesn't sound like much, but sex is a physical activity like any other where you get out of it what you put into it, so if you are vigorous with lots of movements, you'll burn more. That number also relies on many factors like body weight, duration, and position to determine an exact burn.
What I am trying to say is... SEX is like a regular workout session naaa...!!!
So, for men over 50 ... if he's NOT in optimum shape... He wouldn't last more than ONE session!!!
But, of course, there are always exceptions to any general rules .... E..E..E...
Some of my friends' parents ( Farang ) who are a lot older ...
Like in their 60's and they enjoy a vigorous healthy sex life!!!