## Body fat/water %

• OptimusMatt

Posts: 1124
Ok, so I have a scale that measures my body fat and my body water % - however, my body fat % fluxuates dramatically based on the water %.

Example: at 54.9% body water, it tells me I have 21% body fat. at 57% body water, I apparently have a 16% body fat. at 60% body water, I have a 13% body fat.

I realize that it's a range, and it's hard to be precise with scales like these, but it makes it EXCEEDINGLY difficult to set a target with achivable goals (which is a way I try and motivate myself) when I don't have a real, solid number to go by. I also realize that hydration levels should be between 50-65% in males, but is there sort of a standard 'level' that I should be aiming for? I mean, I'd love to tell myself I'm down to 13% bodyfat, but then the next day I'm up to 20%. It's very confusing.

Can anyone clarify? Any input is appreciated.
• Posted by a hidden member.
Those body fat scales send and electrical current through your body. The theory is that because fat is an insulator, the more fat you have the longer it takes for the current to pass through. This equals a higher percentage of bodyfat. If you have more water in your system the current will pass through faster because of your electrolytes (sodium/potassium) in the water. Less water = more resistance. To solve this, try to be as consistent as possible with time, hydration, etc.
Hope this helps
mike
• Posted by a hidden member.
basically water conducts electricity so the more water you hav ein oyu the faster the current travels and miraculously the less body fat you have
• Posted by a hidden member.
the only true way to find out body fat is to have yourself weighed underwater after expelling all the air from your body. this is a very expensive process
• DiverScience

Posts: 1426
My gym has water displacement tests every month or so for 50\$ a pop.

The next best thing is calipers, which won't give you an exact number but is more likely to at least give you a consistent one.
• fryblock

Posts: 387
well at the swine barn we use an ultrasound machine that measures back fat. i wonder if this works for body fat for humans...
• Posted by a hidden member.