Still Strong Can you get stronger without moving at all? This book is about isometric training, also known as static strength training. It's based on a real-life experiment I did, where I trained for almost a week using only still holds-no reps, no jumping, no movement. Just holding positions and squeezing my muscles as hard as I could. I wrote down what I felt and learned each day. This book shares my full experience: the workouts I did, how my body reacted, what was hard, what was surprising, and what results I noticed at the end.