Your ankle circumference measurement should be at the smallest part of your ankle.
Your wrist circumference measurement should be at the smallest part of your wrist just below the styloid process (the bony lump on the outside of your wrist).
Stand erect and relaxed (don't breath in or out excessively). Place tape around your chest at nipple area. Do not flex the lateral muscles.
Raise your elbow to shoulder height. Flex your bicep and tricep muscles with your forearm slightly less than 90 degrees to your upper arm. Measure the circumference of the widest part of your biceps.
Straighten your arm completely. Clench your fist with the palm of your hand in the same plane as your upper arm (ie. not bent over). Measure the part of your forearm with the greatest circumference.
Measure below the Adam's apple at the part with the smallest circumference.
Stand with feet apart and your thigh muscles relaxed. Measure your thigh circumference at the greatest point (just below the buttocks).
Stand with thighs and calves relaxed. Do not stand on your toes. Measure the part of your calves with the largest circumference.
The above calculator has been derived based on
empirical research (ie. measurements of many bodybuilders that have reached near their natural physical limits).
The calculator will predict your natural potential measurements at 8% body fat, considering that all muscles are in proportion to one another. These predictions also assume that your body is cold (ie. without a pump). You may find that more responsive muscles will grow past these predictions, and conversely,
less-responsive muscle groups may fall short. The use of pro-hormones will effectively deem this calculator irrelevant.
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