There's nothing like knocking out a quick sketch of a pose to help yourself clarify what you're aiming for in your animation.
Going to the school's quick-study gesture drawing workshops is a great approach to becoming comfortable with a pen in your hand as well as learning more about human anatomy, and heck, you're already paying for it.
Drawing people in person always helps add personality to your drawings, but if you're unable to make it to the workshops this an online quick-study resource:
There are a finite number of poses and the camera is randomized, so sometimes your angle may not be perfect, but I like to think of it as a great challenge.
Enjoy! Happy gesturing.