Five short quizzes from Fix the Floor

Five questions, about two minutes. Every answer comes from Fix the Floor, the new book by neuroengineering professor Aamir Malik.

• How much do you really know about sleep?
• How much do you really know about friendship and health?
• How much do you really know about exercise?
• How much do you really know about food?
• How much do you really know about your habits?