Hi Doc, I am 69 and in good health, 6 ft , 190 lbs. a gym rat daily. I have a healthy sex drive and would like to have sex about three time a week. My problem is that while I get a strong erection and can hold it for a long time, ejaculation is sometimes difficult to achieve. When I have a lot of stimulation first, things work better. My wife would like for me to cum a bit sooner. Is this just old age?