Laura Koniver, MD is a holistic physician who helped me understand what grounding was early on. Here is a list of my favourite videos. I hope they help you understand and explore the world of grounding, as much as they helped me. The sound isn't great in all the videos, so you may need to adjust the volume.
How Quickly Does Grounding Affect Your Body?
Grounding, Your Brain, and Sleep
Here is the link to the study she makes reference to in the video.
Grounding For Chronic Disease
A Crucial Factor For Grounding Success
Grounding To Boost Metabolism and Lose Weight