Mandalay,
Due to years of bad habits and stress, I too had some challenges maintaining an erection (I am 45 years young!). I could get it up, but it would not stay that way very long. In six weeks I reversed that, and can now stay hard as long as I need to (over two hours last Friday night!!!!!!!!!!) Here's what I did:
Kegals - DLD's PC routine. This is critical!!!!! Itis the foundation. I did the routine three times per day. When I started, I could not hold my kegal for the one minute at the end. Now I can hold it at least three minutes!!!!!
Jelqing - I am not using this as a girth exercise, as I do other things for that. I jelq at least 600 times per day at 70%-90% erect. I also am careful not to jelq too hard. Grip tight enough to encourage good blood flow and a slight expansion of the penis. Remember, I do this for [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]penis health[/words] and circulation.
Exercise - Studies indicate that those that do some type of leg work have better circulation in the genital area. I walk at least two miles every day I can. Every other day I do
weight work (squats, etc.).
Supplements - You can find tons of recommendations. However, I have been taking 1 multi vitamin with minerals for prostrate health, 500 mg niacin, 1000 mg l-arginine in the AM. In the PM, I take the multi vitamin and 2000 mg l-arginine.
ROP - After 4 weeks of the above things, my erections were much firmer, and I could maintain a 90% + erection for much longer than before. Three weeks I built a ROP. Within a week, my erections were rock hard and I was staying that way!!!!!!!!! My wife is loving it so much she has literally attacked me 8 nights in a row, and during the day Sat & Sun this past weekend!!!!!!!!!! Friday night we banged for over two hours!!!!!!!! Not bad for an old fart, huh?????
I am not saying this is the magic program for everyone. There are tons of Penis Enlargement gurus on this forum who can offer more info that me. However, it worked for me and I recommend at least giving it a try.
Good luck, and happy twat poking!!!!!!