Joan Vernikos studied the effects of weightlessness on health and served as Life Sciences Director at the NASA Ames Research Center. We featured another one of her earlier books: Sitting Kills, Moving Heals. This book is kinda like Part 2 of that book. The theme is the same: Sit too much and you’re going to experience the same types of negative effects that astronauts experience in the microgravity of outer space. Big Ideas we explore include the fact that gravity is our friend, why we don’t want to be active AND sedentary (are you?), some stats on the health problems caused by sitting (did you know it can be as bad as smoking or drinking heavily?), and the keys to Optimizing.