Seeing as this is very nutritional, I thought I would put it here, rather than another forum.
Back in highschool, my body fat was 2-3%, depending on the time of the year.
Is it healthy to be that low? I'm sure Im at about 7-8% right now (being that highschool ended 2 years ago and so did exercising). I can get back down there without a problem, I just don't know if I want to. Yeah, it's awesome having nothing in the way of your muscle, but I don't want to screw with my body in the wrong way. That isn't what being healthy is all about.
My girlfriend bought one of those bathroom scales with BF% readout. It uses an electrostatic pulse sent up through your bare feet (you can't feel it) to calculate BF%. I think its extremely inaccurate. Because I can't imagine my BF% being 45%!!
I think the water test is where you get a calculation between actual (land) weight and the weight of the water displaced by your body when you get dunked in a tub. I think its the most accurate test.
The silly calipers you use to pinch yourself with are ridiculous.
At extremely low BF% everything system in the body is highly stressed and not working correctly. That's why even Pro BBs wait until the last minute to get ripped and right after head for Dunkin' Donuts.