Please note: This is a companion version & not the original book. Sample Book Insights: #1 The skin is the body's largest organ, and is in charge of keeping everything in. It stops the outside world from touching your insides, and it's constantly being battered by high-energy radiation from the sun. #2 The skin is the largest organ of the body and is in charge of keeping everything in. It stops the outside world from touching your insides and it is constantly being battered by high-energy radiation from the sun. #3 The skin, the body's largest organ, is in charge of keeping everything in. It stops the outside world from touching your insides, and it is constantly being battered by high-energy radiation from the sun. #4 The skin is the body's largest organ, and is in charge of keeping everything in. It is constantly being battered by high-energy radiation from the sun, and it stops the outside world from touching your insides.