The Canada Games Centre in Clayton Park says it's enforcing a dress code for its members that includes a ban on tight shorts and slinky tops.
Staff at the Canada Games Centre started posting the new rules two weeks ago, warning women if their shorts are too short they’ll be asked to change.
"We received a few comments," said general manager Gary Furlong.
He said the dress code has always been in place, but it's time for a reminder.
"We're going through a bit of an education component to be sure that all our new users are aware of our rules and regulations."
Emma McCracken works out at the gym a few times a week, on Monday she wore a baggy t-shirt and long pants.
"I guess just cause like running on the tread mill for instance or bending over I see bums falling out and some people don't want to see that," she said.
Member Shaun Keyes said no one should feel awkward at the gym.
"There is a wide variety of people from different backgrounds from different places in the world so I don't think anyone wants to feel too uncomfortable when they're in here," he said.
The dress code says shirts have to cover the upper body and shorts must be mid-thigh or longer.
Hazel Gaudet said she’s glad managers are cracking down on short shorts.
"I feel like it makes the woman look like she's cheap. Makes you look right cheap, like you know she's not worth nothing. I don't like the look of it, I find it very degrading for a woman," she said.
The Canada Games Centre is in the midst of two-week campaign to spread the word about short shorts.
The rules apply to men as well.