Fat and muscle weigh the same ... person's body. So a woman who works out all the time might weigh the same as a woman who rarely hits the gym, but she'll also likely look completely different.

Though burning fat and building muscle concurrently may be possible, it's not necessarily optimal, says Lee Boyce, C.S.C.S., ...

Here are eight images from MyBodyGallery that demonstrate just how different men can look at the same weight.