Your are unique, just like everyone else. Your "ideal" weight is just a guideline.
For example, a fit woman on a 1,500 calorie diet or a fit man on a 2,000 calories per day diet who regularly worked out at a high intensity for over 5 hours per week for 6 months to a year
could get close to thier ideal weight. That kind of discipline gets you to ideal, a few more calories and less exercise can keep you healthy.
Your mileage will very. There are more precise methods for calculating your fat, ideal weights, frames sizes and target heart rate zones.
For example, the "Immersion" or Hydrostatic Density Test is the widely accepted standard for measuring body fat.
These results are estimates only.
If you don't have a flexible tape measure, just wrap a piece of cord or string that does not stretch around your wrist and measure the string!
Measure to within a 1/4 inch. Whatever you use to measure yourself make that it fits snugly but does not compress the skin.
In many cases, Internet Exploder users will find it much easier to navigate select boxes with the arrow keys
Moderate Activity is defined as exercise at or above 70% of your target heart rate zone for at least 25 minutes.
Study of the Military Services Physical Fitness, DoD, 1981
http://www.nhrc.navy.mil/programs/BodyFat/index.html
Metabolic Information Harris J, Benedict F. A biometric study of basal metabolism in man. Washington D.C. Carnegie Institute of Washington. 1919.
American Journal of Clinical Nutrition http://www.ajcn.org/
Metropolitan Life Ideal Weight Tables