I've heard and read that can keep any man, especially those with E.D., hard for 3 1/2 hours nonstop without even trying--not going into the neurochemical reasons why. Healthy men's natural testosterone starts declining by about age 30; you start noticing it by age 40 because you're not willing or able to keep having 2 or 3 orgasms a day--men with children & stresses in their lives tend to give into the natural pull to slow down and not feel like exercising (however counterintuitive it seems, I always felt better when I could work out shortly after work, even if the feet I'd been standing on all day weren't up to running). For most men who don't remain physically active, testosterone levels usually start dropping dramatically in their early 60s; the usual trend is most men lose their sex drive by age 80. Intentional and continuous meaningful exercise, though--especially aerobic and weight-training--naturally causes testosterone levels to increase; for those of us who have thought about long-term health (inspired, in my case, by my mother's 3 aunts who lived into their 90s, one raking leaves 2 weeks before her 100th birthday), staying active (physically & sexually) does wonders. (I also learned in my late teens how to pace myself and last much longer because I really wanted to stay rock hard as long as possible.) Right after I turned 52 in 2007, a 28-year-old versatile top at a monthly group party pulled me aside at one point and wanted to know what I did to fuck nonstop like that for so long--I told him my all-natural reasons. Two months earlier, I fucked the main host for 45 minutes nonstop; about 15 minutes on, one of the 2 part-time hosts lay down & started watching us; after another 10-15 minutes, he said, "How do you do that?" I'm about to turn 65 and know that most people in their 60s look lots older than me. Yet, about 1 1/2 months ago, a 24-year-old whom I had met somewhat by chance during a thunderstorm several months ago, rather surprised me by asking if I wanted to fuck him; I said, "Yes, actually." But, he had caught me by surprise shortly after I returned from work; so, I was still tired with the stresses from that. We did play awhile, though, until I shot one of my oversized cum loads all over his chest.
So, anyway, I have yet to use Viagra or Cialis, although I've thought it would be interesting to try a mild dose for a group party. I hope I don't need it myself for a long time yet, even after the major stresses I've been through the past year, which included moving on the coldest day of the year a year ago and my mother's medically unnecessary passing in February. A guy in his mid-40s has been trying lately to match his availability with mine so that he can suck me off at least a few times; it turns out we have so much in common that we may try starting 3-ways & more later.
The attached pics are from only 3 years ago. (It's been mostly either impractical or impossible to take pics since then.)