Hi Keith, How much you should weigh can be determined by your height and body frame size. The width of your wrist measured in inches is the standard used to determine frame size.
How to Determine Frame Size:
1. Extend and spread apart the fingers of the dominant hand.
2. Place cloth tape measure around wrist at the point where there are two "knobs".
3. Measure ensuring that the tape goes across both "knobs".
If you do not have a tape measure, a rule of thumb to determine your frame size is to wrap your thumb and middle finger around your wrist on the opposite hand. If the thumb and finger overlap then you have a small frame. If the touch then you have a medium frame. If they do not touch then you have a large frame.
How to Determine Ideal Weight Range:
Knowing your frame size, you may now calculate your ideal weight range using this online calculator: http://www.freedieting.com/tools/ideal_body_weight.htm Based on your height of 5'8" here are the ideal ranges for a healthy male:
Small frame: 143 - 147 pounds
Medium frame: 154 - 158 pounds
Large frame: 165 - 169 pounds
For more precision, specialists recommend using a combination of Body Mass Index (BMI), Body Fat and Lean Body Mass to figure an individual’s ideal healthy weight. Calculators for each of these are available on the web.
Here is a useful full body analysis online calculator: http://www.webcalcsolutions.com/Health-Calculators/Full-Body-Analysis.asp?AcctNum=3
HealthCentral also has a handy online tool to calculate your ideal weight. You can access it here: http://www.healthcentral.com/diet-exercise/ideal-body-weight-3146-143.html
Before starting any diet to lose or add weight, be sure to consult your doctor to discuss what is the best weight for you.
I want to mention, just in case you didn't know, that muscle weighs more than fat. The online calculators provide an excellent estimate at what would be considered average. But you may have other factors involved. Talk to your doctor about what would be a healthy and desirable weight for you!
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