But that imbalance means they have to cater to women to get them to sign up, or men won't have a reason to pay for the service. And if you start asking for weig

But that imbalance means they have to cater to women to get them to sign up, or men won't have a reason to pay for the service. And if you start asking for weight or BMI, there goes most of your already-too-small female membership.