Well, I think ejaculation time differs from one individual to another. I doubt if there is any reliable medical fact regarding average ejaculation time.

I don't think it should be a problem if you push through the tired feeling after ejaculation. That's my personal opinion though.

As far as ejaculation time it varies. I can go as long as 15 minutes of sex before I ejaculate. Most of the time I go anywhere between 2 minutes to 5 minutes before I ejaculate.

There is no way to measure an average Thoumas, the process of orgasm is too complex. Even performing the same act at the same rate with the same stiumulation you will ejaculate at a different time every time.

It's not any more healthy that not taking a nap when you're tired in the afternoon. That sluggish feeling is your body's way of reminding you that you've burnt through a tremendous amount of calories and been riding an endorphin high that you need to rest to prevent injury. At your age it's really more of a friendly reminder from your body than an urgent alert.

As others have said, there's no way to find an average. Each session different positions, progressions, etc. If you're worried about lasting long enough, basically if the woman is orgasming and satisfied (if she's a multi-orgasm girl you might want to stay longer) you're free to go.

I can pretty much control it to last a while or go in 5 minutes, depends on what she wants. I have found if you hold out too long it is very difficult to get back, so it's a delicate balance.