So since I have a lot of time in my hands (note of sarcasm) I decided to to calculate BAP's BMI and see if their weight is normal or are they skinny little es who need to eat and take a break like normal human beings. How do you compute for BMI?

BMI

The normal BMI is between 18.5 and 25. I m going to use the data from itsbap.com  Let's start?

B.A.P(20.3)

Zelo 

185cm, 63kgs - 18.4 
The minimum BMI to be of normal weight is 18.5, so Zelo needs to stop the growing taller and gain at least 200g weight. 
So I remembered that it's below 20 that one is considered an adult in bmi, and Zelo is still normal in the children's chart.

Jongup

176cm, 66kgs - 22.3 
Puppy's bmi is normal. Yay! :) Even if he is the shortest among the six, he has the heighest bmi, thanks to his muscles hohoho :3

Youngjae

178cm, 65kgs - 20.5
Princess Youngjae's weight is also normal. As a mater of fact, we have almost the same bmi OwO

Daehyun

177cm, 63kgs - 20.1
Even if Daehyun eats a lot, you can't call him a fatty since his bmi says he is normal.

Himchan

180cm, 69kgs - 21.3
Can everyone please stop telling Himchan that he is getting fat? He is pretty healthy with his height and weight so shut it es. u.u I love him with some meat on his bones pls. He ain't fat. To be honest, he has the closest to ideal bmi if we go for the average of its limits (21.75) . 

Yongguk

180cm, 62kgs - 19.1
So yeah, even if Yongguk is so skinny, he is still normal if I am to believe the stats they say. This makes me happy, sort of... I still think he should eat more and rest and do human stuff.

Overall their average is 20.28. Daehyun is closest to their average.

Let's do the same for other bands? 

So we see that Woohyun, Sungyeol and Sungjong are underweight. Sungjong needs to gain at least 4kgs. Sungyeol needs to gain at least 3kgs. While Woohyun needs to gain at least 1.25kgs. Their average is 18.5 which is like the floor for BMI... meaning, if say Dongwoo, Sunggyu and Hoya all lost one kilo each, they would be underweight as a group. O n O 

BTS (19.05)

Jin - 179cm/60kg - 18.7
Suga - 176cm/57kg - 18.4 <-- Suga is in the children's chart since he is below 20, right? 
Jhope - 177cm/59kg - 18.8 
RapMon - 181cm/64kg - 19.5
Jimin - 175cm/60kg - 19.6
V - 176cm/58kg - 18.7 
Jungkook - 176cm/61kg - 19.7

EXO (as of August 2013) (20.3)

Suho - Height: 173cm/5’8 || Weight: 65kg/143 lbs - 21.7
Baekhyun - Height: 174cm/5’8 || Weight: 58kg/127 lbs - 19.2
Chanyeol - Height: 185cm/6’0 || Weight: 70kg/154 lbs - 20.5
D.O - Height: 173cm/5’8 || Weight: 60kg/132 lbs - 20
Kai - Height: 182cm/5’11 | Weight: 65kg/143 lbs - 19.6
Sehun - Height: 181cm/5’11 | Weight: 63kg/138 lbs - 19.2
Kris - Height: 187cm/6’1 | Weight: 73kg/160 lbs - 20.9
Xiumin - Height: 173cm/5’8 | Weight: 65kg/143 lbs - 21.7
Luhan - Height: 178cm/5’10 || Weight: 62kg/136 lbs - 19.6
Lay - Height: 177cm/5’9 | Weight: 60kg/132 lbs - 19.2
Chen - Height: 173cm/5’8 | Weight: 64kg/141 lbs - 21.4
Tao - Height: 183cm/6’0 | Weight: 70kg/154 lbs - 20.9

It seems that Exo are of healthy weight. I'm not sure about Xiumin's stats though since he lost a freakin lot of weight during the past year. 

VIXX (19.4)

N - 180cm/65kg - 20.1

Hongbin - 181cm/62kg -18.9

Leo - 183cm/63kg - 18.8 

Ken - 180cm/65kg - 20.1

Ravi 183cm/65kg - 19.4

Hyuk - 181cm/62 - 18.9

VIXX has the most uniform body type among these bands ._. Like srsly... They only range from 180-183cm... then the weight is 62-65kg. ._. But they are normal and of healthy weight. Yay.

NU'EST (18.8)
(These details are sort of outdated -_- If anyone has NUEST's updated height and weight, do tell me)

JR - 176cm/58kg - 18.7

Baekho - 179cm/63kg - 19.7

Minhyun - 181cm/65kg - 19.8

Ren - 179cm/56kg - 17.5 needs to gain 3.2kgs to be not underweight

Aron - 176cm/57kg - 18.4 needs to gain  0.2kg to be not underweight

My ship ARen needs to go out on more dates in restaurats... and lessen buttsecks... err  I mean stressful activities. 
Even if Ren is in the children's chart, he is still underweight there.

 So among these groups BAP, Infinite, EXO, BTS, VIXX, NUEST

Suho and Xiumin had the closest to perfect bmi.

The skinniest es are

1. Sungjong
2. Ren
3. Sungyeol

.... who all happen to be in my bias list. ._. So... I do have a  think for skinny boys. Yeah.

Others who need to gain weight are Aron and Woohyun. 

Infinite is the skinniest group with the average bmi of 18.5, followed by NU'EST with 18.8.
BAP and EXO have the same average BMO of 20.3.
 

Only EXO and VIXX don't have an underweight member (but then again I'm not sure if this still hlds true for Xiumin)
 

The variance of each group's BMI is as folllows:

BAP - 2.03, Infinite - 0.95, BTS - 0.28, EXO - 0.96, VIXX - 0.37, NUEST - 0.92

For those who don't know about variance and statistics in general I'm too lazy to explain it at the moment. But to make it simpler, it only means that BAP's BMIs are most spread out while BTS's BMI are more simillar to their average. (The lower variance, the closer their BMIs are to their group's average. If the variance is zero, it means the values are all identical.)

So why did I do all this? I dunno. I am procrastinating and I wanted to know if BAP are of healthy weight... and I kinda got carried away and computed for the others' too. Maybe I should do this for girl groups too but I'm afraid of what I'd find. Depending on which site you ask data from, Sooyoung of SNSD has a BMI ranging from 15.6 to 16.8. Again, the normal BMI is 18.5. This would mean she should gain about 5kgs to be of minimum normal bmi. I am only nine months younger than her. If I lose 5kgs, I would still be of normal BMI with a few to spare. To those who don't understand the metric system, 5kgs is 11pounds. That means that if I give her 11 pounds, she would still be 0.2 bmi units below me. .___. Scary man. I ain't dissin Sooyoung. She's like my muse and all. But yeah, bb is too skinny ;w;