I stumbled upon this website a week ago and decided to share with you guys. It's really worth looking.
[link]That's probably one of the most helpul websites for artists I've ever seen with lots of anatomical 3D models in different poses and/or angles. As you might see they also have different models for men, women, children and... one guy with extreme muscles who looks like Hulk.
They have different drawing exercises for practise on there as well!
This website helps me a lot and I hope it will help you, too!