Gravity?

So when dealing with Erb's Palsy you'll hear therapists and specialists talk about Gravity assisted, gravity unassisted, etc. It's all so confusing. Right now Camryn is lifting overhead with gravity eliminated but we want her to be able to do it against gravity which will take time. Is there an easier way to explain this concept and to understand it. Sometimes, I really have to think about it to understand it!

Would love to hear from you!?