Generally this kind of problem

There are a few possibilities

Firstly, you encountered something on the way to do it, and interrupted for a while, so it was soft

Secondly, he was very tired, so he was not able to do it

Thirdly, maybe the woman's charm was not enough

Fourthly, basically, men are weak in the kidneys, not enough qi and blood, so not hard enough

In fact, this kind of phenomenon is usually the man's own problem

It needs to exercise.

This is usually a problem with the man himself

He needs to work out

and tonify his kidneys

This is a problem with the man himself.