This is the male only section, you should remind her of that!

"actually you're not allowed to be in this part of the gym, it's reserved for male athletes only.'

"Athletes?!" She bursts out laughing "Athletes!" The word seems funnier to her every time she says it. After the fifth time she's almost doubled over giggling with tears in her eyes "o-oh that's ha! That was a good one male!" She gives you a thudding pat on the back that knocks the air out of your lungs "ever consider a career in comedy?"