Originally Posted by Eric Montgomery
At 5'8" and 126lbs why are you trying to lose weight?
Exactly. My girlfriend is around the same height and weight, probably a little taller, she is pretty thin.
Personally I don't trust those calculators for measuring body fat, calipers or those water immersion tanks are probably the best.
Eat good, healthy food, get plenty of sleep, reduce stress, and follow a program to gain strength. Could be SS, GSLP, or any of a couple of others out there.
Just my advice.