Blender animations how keep bone transform for current frame I'am trying to create push ups animation. I need put down body to the floor, bend elbows, but keep legs and arms in same place. 
So, the animation is more complicated, then it looks like, and I really have not idea how to do it. I think I have to create better Ik rig, but i do not which one and how. Do you have any ideas? tutorials?
If you give your rig inverse kinematics this would be a lot easier. Set it up on the wrist and foot bones here is a good tutorial.
tutorial link