Have noticed recently that my orgasms have been lacking intensity, I think in all honesty this has been happening for some time but have not really paid much attention to it. I have an v active sex life with my partner and there are no issues with the relationship so am at a loss to explain the reasons beyond that it might be fitness related as a knee injury has left me sidelined from running for the last 6 months but I am not overweight, non smoker etc so dont know if this should be a factor. Any help would greatly be appreciated.

How old are you? More information will help.

29, but am starting to think I must have been born an old man...what other information do you need?

jimmy26, hi. I'm a woman so I don't know if I can offer anything specifically but here's a few thoughts that spring to mind.
When you say diminished intensity do you mean less satisfying or still satisfying but just less intense? Do you have sex very frequently and does that have an impact on intensity?

My sweetie who is quite a bit older than you says that his orgasms are much more intense if we make love for a long time, staying aroused for longer makes for very satisfying and intense orgasms for him.

Has anything changed (other than the injury you mentioned) or has nothing changed in your love making. Forgive the 20 questions, I don't mean that you should answer them, just some things to consider? I think I may have been an investigative journalist in a past life.