Welcome to hip. You should post in the Love and Sex forums and perhaps be a bit more specific with your request.
Assuming that you have a partner who enjoys a good tango, if you are feeling inadequate, you may need to chat to a SPECIALEST doctor who deals with hormone and mineral deficiency related problems. All that the internet will do is help you empty your wallet. . You may be able to get some helpful advice from a few HF members and at least it wont empty your bank account.
"Sex ability" has no discernible meaning. That you identify your age and being male does not shed any light on what you are seeking to improve, by how much you want to improve it, or by when you want it improved. If you don't know where you're going, any road will get you there.