I teach high school biology and physiology. I purchased this to show to my students as a supplemental resource. The information is very detailed and there is A LOT of it. I found the video too long to show in one piece, but it is broken down into body systems well, and I will use it in pieces to highlight each individual system as I teach it. When previewing the video, I paused it many times and watched it over the course of a few days. It was interesting, but too much all at once. I do recommend it.