The document discusses the teenage brain and how it differs from an adult brain. It notes that the teenage brain is still developing and undergoing changes like synaptic refinement and pruning. As a result, teenage brains are less developed in areas related to planning, judgment, risk assessment, and impulse control. It provides examples showing teenagers have greater difficulty with delayed gratification, procrastination, and resisting temptations like food rewards. The document advises parents to have realistic expectations about teenage behaviors but not tolerate serious issues like substance use or defiance. It recommends staying calm when interacting with teenagers.