Some men just need more testosterone and one way to get them is to go on supplements but of course you want to read up on the many reviews out there like the arginmax reviews to make sure that it is for you. And always ask your doctor especially if you have a pre-existing condition or are on other medications that may interfere with the supplement. My friend at work has an older husband that needs to take testosterone. Sometimes she says that she can see him getting moody like a girl and she knows he forgot to take his supplement…we do what we have to do!