^^^ basil that's correct, I would say the acceptable upper limit for average woman should be more like 22 BMI, while 25 for men, due to larger amount of muscle mass in men. But it would be the best to get the info about body fat measurements, this BMI business doesn't really tell us much (or perhaps something like "weighted" BMI where the average athleticism of the demographic group would be taken in consideration.
Or fuck all of this, the best survey would be get a group of red blooded straight, not chubby-chasing men and get them to rate a few thousand of full body shots of women in their underwear (or at least in a very form-fitting athletic gear), carefully chosen so that the sample is well representative of the whole population. Rate in 4 categories like 'slim/athletic', 'acceptable', 'fat' and 'obese'. You may need a strong stomach for this. I'm sure the results would be quite depressing.
Or fuck all of this, the best survey would be get a group of red blooded straight, not chubby-chasing men and get them to rate a few thousand of full body shots of women in their underwear (or at least in a very form-fitting athletic gear), carefully chosen so that the sample is well representative of the whole population. Rate in 4 categories like 'slim/athletic', 'acceptable', 'fat' and 'obese'. You may need a strong stomach for this. I'm sure the results would be quite depressing.