These Russian girls have some scary hands

Every female body builder has scary hands because they have such little body fat. You may not have seen it because it's so difficult to achieve. These chicks are badass, whether you believe it or not.

That's very low double but more likely single digit body fat. You can see they both have well developed arms and shoulders, so to sport that musculature with such low BF is no small feat for a non genetically gifted man, for a woman it's extra hard. Vascularity (visible veins) tends to increase when muscle increases, fat decreases, and with dehydration and other states. They're both likely "flexing" to better show their muscles for the pose. This would also help the hands and body appear more vascular and tense as in the photo. If they planned to show, they would likely be semi starved and dehydrated too. Diuretics often used cosmetically for showing physique would also make it more pronounced as would certain performance enhancing drugs (steroids, HGH, etc) commonly used by fitness athletes and "models."

I mostly meant that their hands are huge.