In general, will going to the gym and doing the full weights routine the same day you plan on having sex REDUCE or INCREASE a man's stamina and durability later on in the evening? I hope this questions is not inappropriate.
The gym I go to is in the same building as my caffeteria which is right next to an all girl dorm (17 stories!). The weather here recently just got warm here so the ladies started wearing some pretty small fitting items. Wow I felt like it was about to be over right there in the caffeteria, I almost died.
A good friend of mine, who I worked out with, was dating a female friend of mine. While we were working out, he would always say he wouldn't have sex with his girfriend (my friend) very often because it would lower his testosterone. This guy was ripped and still is I here. Anyway, I remember thinking that it was a damn shame, because this girl (my friend) was absolutely gorgeous.
So...I don't know the answer to the question, but if you have a fine girlfriend, don't sacrifice sex for working out!!!