Curated OER
Kids Health: Why Exercise Is Wise
Some people know that exercising is beneficial, but still find reasons why it isn't a priority. This article relates the importance of exercising and how it can improve your mind and body. Links to similar sites are provided as well.
Other
Teaching Ideas: p.e. Ideas
This website is a great resource to discover new physical education activities to bring to the classroom. Activities are grade appropriate (although keep in mind this is a British site and curriculum standards may differ).