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View Full Version : anybody know if muscle really does weigh more thanfat?


Blade96
17-Nov-2009, 06:04 AM
Notsure where this question goes but it is about the human body and ispartly relatedto health and fitness so maybe itgoes here. Idk ifits in the wrong section maybe amod can move it?

anyway noticed that wheni weighed myself the scale says a little more than itusedto andi been in MA now 2 months Then I wondered if it is because i may have built up a little muscle cause I heard somewhere that muscle weighs more than fat andI wondered ifits trueor not.

Anyoneknowif it isornot?

(and btw sorry again about myspacebar as I said to someone before,itis broken) :(

simon s
17-Nov-2009, 06:17 AM
Muscle is three times denser than fat. So as your training progreses you may find that your clothes start to fit a little better as you slim down, but the scales show you have not lost weight-or even gained weight.
Ignore the scales and be happy that you feel better and clothes fit better.

Custom Volusia
17-Nov-2009, 06:44 AM
Yes it does.

Kuma
17-Nov-2009, 08:22 AM
A pound's a pound no matter how you weight it. Follow the advice of simon s.

Custom Volusia
17-Nov-2009, 08:51 AM
The idea of muscle weighing more then fat is that if you took two equal sized buckets of each, the bucket of muscle would weigh more because it is denser (as simon said). So yes. It does.

CosmicFish
17-Nov-2009, 11:55 AM
OK, muscle is more dense than fat, and therefore it does take up less space lb for lb. However, it most certainly is not three times as dense, else bodybuilders would be a lot lot smaller when ripped! The relative densities of both are as follows (and are compared with water for reference):

Fat ~0.9 g/ml
Water =1.0 g/ml
Muscle ~1.06 g/ml

This means that muscle is only about 17% more dense than fat.

As to whether your extra weight is fat or muscle - it's not possible to tell without doing accurate measurements on your body. If you've just started MA, then you may well have put on muscle. However, any extra cardio might just as conceivably have burned some off.

IMO - focus on your training, for whatever reasons you are doing it, and let your body adjust itself to adapt. If you're concerned about your weight &/or fat levels then read up on nutrition, track calories, buy yourself a body fat caliper from Amazon or ebay and google 7 or 9-point caliper tests. Many of us here can point you at useful resources for this should you want them - just ask! :)

Custom Volusia
17-Nov-2009, 11:52 PM
Yeah..I wasn't sure about the density compared to fat which is why I didn't go into that!

Blade96
18-Nov-2009, 01:26 AM
Hey, thanks, peoples =]

and CosmicFish, I will ask if I have any questions and thank you so much for offering! :)