Quiz: How much do you know about fitness? Posted under Quizzes. Updated 13 October 2015. +Related Content How much do you know about fitness? Take our quiz to find out!1) Which activity is an example of aerobic exercise? Stretching Dancing Playing video games Meditation2) When should you stretch? Never - it only matters if you want to be really flexible Before exercising After exercising Before AND after exercising3) How often should teens exercise? 30 min/day 45 min/day 60 min/day or a total of 1 hour/day 2 hours/day4) What is the "Talk Test"? It is a test that determines if you can learn another language. It is a test that can help you figure out if your physical activity is moderate to vigorous in intensity. It is a test to measure how big your vocabulary is. There is no such thing as a Talk Test.