l am a 18 yr old male 5' 11'' and am not muscular but not even somewhat fat how much should l weigh

136-165

If you're 5'11 and a male, 150-175 would be your optimum range. That is based upon body mass index.

You can be anywhere from 132 - 177 and still be considered in the normal range for your height. You can check your BM l (body mass index) here http://weight-loss-surgery-or-weight-loss-program.com/bmi-index-calculator.html

Your BM l is what doctors use to determine if you are underweight, normal weight, or overweight.


Hope this helps.