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The 44-year-old Chelsea women's manager has won the Women's Super League title three times, two FA Cups and a League Cup during her nine years with the Blues.
Speaking as part of BT Sport's State of Play, the former Chicago Red Stars boss said that women's nets should be made smaller and "built around our physical differences."
And Hayes believes that change could result in "talking about great goalkeepers as opposed to exposing them."
The Chelsea women's head coach explained: "If I took a male player and a female player and I asked them to run 10 yards, more often than not, though that's changing, the male player would get there quicker than a female player.
"If the same male player and female player were to be in standing positions and both jump, the range for a male is going to be greater than that of a woman.
"So, you think where's its relevance? Well, first it would be in goalkeeping for example.
"There is often a criticism about goalkeeping in the women's game, I would argue that the goal is just a little bit too big, if it was built around our physical differences, then we would be talking about great goalkeepers as opposed to exposing them.
"Rather than mirror everything we take from the men's game, we have to adapt it to our own sport and our own physical expectations as well as the tactical implications.
"It's the mindset that has to change, and once it starts to change, there is a realisation that the sport has its own differences because, more often than not, everyone coming into our game is coming from the men's game or other sports."
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