Woman on top isn't as easy as imagined...

I am a girl who exercises regularly. I don't know if I haven't developed it successfully yet, or if I really don't like the woman-on-top position. Besides being very hard to move, it also consumes a lot of stamina...

Every time I do woman on top, I can only move a little before having to rest, so my male partner has to hold back again, it's really unfair to him

Even if sitting and grinding, when grinding to a comfortable point, usually it doesn't take long before my partner can't hold back and wants to thrust back from below