Quote Originally Posted by Shlup View Post
Tifa's boobs are very big for her small frame. You have the frame to support larger breasts. Tifa doesn't, and she's a kick boxer besides. The only two people I know who have been physically active with small frames and large breasts had them reduced. The people I know with large breasts who haven't had them reduced are not physically active and have larger frames, though two of the three still complain of back issues.
According to this wiki, Tifa is 5'5". Three of the four sources cited for her height are that (167 cm = 5'5"). It doesn't list a weight.

Now, plugging that height into a BMI calculator along with the hypothetical weight of 150 lbs (conservative for her tiny tummy, but she is very muscled) produces a BMI of 25, in the "overweight" category. Tifa would be overweight at anything over 150 lbs. That is the maximum healthy weight for a woman of her height.

How much of that is her exocrine glands? According to this (NSFW!! Science), breasts weigh between 1.1 and 2.2 pounds each, and (I guess) tend to be close in weight to each other.

I calculated what percent of 150 lbs 4.4 is, and it comes out to almost 3%.

What happens as her weight goes down, but not the weight of her breasts?

Assuming a weight of 125 gives us the BMI of 20.8, (right in the middle of the normal weight zone) and her breasts (assumed to still be 4.4 lbs total) are now 3.5% of her total body weight.

Anything under about 110 would be dangerously unhealthy, and certainly not supportive of a martial artist's calorie needs. At 110 her breasts become a solid 4% of her total body weight.

This really doesn't seem like much, and it suddenly occurs to me: large breasts aren't difficult on the back because of their weight...it's constantly having to wear a tight strap around your back to hold them in place, and move them away from things, because the bigger they are, the more sensitive they are.

But I can't really know, as I (obviously) have never had the pleasure of owning a pair.