Generally, if someone has a BMI of 20, he/she usually has a substantial fat layer under the skin. As such, the fat layer will tend to "smooth" over the usual muscle definition, and you won't really be able to see what your abs look like. You need to get down to 10 or even lower to show your abs.
No, that would be dangerously low and could lead to long term health problems, even hair loss and bone related disorders. A healthy bmi, is between 18 - 25, the best way to build muscle is to do a lot of weight lifting exercises and good cardio exercises - like running which will burn fat and expose the hidden muscles underneath. If your BMI was that low you would probably have low or no muscle in your body as your body uses muscle for energy when you don't eat enough. You need a healthy diet and a regular exercise plan and it may take time but it will work as time goes on.
A 14 year old boy with a BMI of 23.5 would be considered to be in the healthy weight range.
It does not matter how old you are, it is not possible to get abs in six seconds.
17-19
Work out alot! i have abs and i am 14 they look great. lots of ab work and you will be there in no time.
A BMI between 25 to 29.9 is regarded overweight. Anything over 30 is regarded obese. Normal BMI is between 18.5 and 24.9.
It depends on your height. Use a BMI calculation as a starting point.
Use this to find out: http://nhlbisupport.com/bmi/ -DJ Craig
It depends on your height. Work out your BMI and then you will see as this works for any age.
Sorry, according to the BMI that's overweight.
It's in the average range. But it's almost underweight. Your BMI is 19.4 A healthy BMI falls between 18.4 and 25.9 http://www.nhlbisupport.com/bmi/
According to BMI, your weight should be about 65kg-75kg to be normal.
well it depend on your height and you can use a bmi calculator to see if you are underweight or normal