There are strangely a lot of female hams at my gym and I can say that I have never seen one of them work up a legit sweat (minus the ass sweat they all seem to leave behind) the entire time I have been at this gym (a year now). The majority like to sit on those stupid ab rotation machines and talk on their phones or lay on the mats pretending to do sit ups or walk on the treadmill at a pace that would be humiliating for normal people.