Every now and then a man’s mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions. - Jim Kwik

He argues that short-term memory pathways will start to deteriorate from underuse if we overuse technology.

I suggest you use the Pomodoro technique, a productivity method developed by Francesco Cirillo based on the idea that the optimal time for a task is 25 minutes, followed by a 5-minute break.2 Each 25-minute chunk is called a “Pomodoro.” As you read this book, I suggest that you read for one Pomodoro and then take a 5-minute brain break before continuing.

Make sure you have a block of time set aside to get into flow. It’s commonly believed that, when conditions are right, it takes about 15 minutes to achieve a flow state and that you don’t really hit your peak for closer to 45 minutes. Clearing out only half an hour or so isn’t going to allow you to accomplish much. Plan to set aside at least 90 minutes, and ideally a full two hours.