The normal, or resting, pulse rate in adolescence can range between 50 to 60 beats per minute to as high as 90 to 100. When active, the maximum heart rate for a teen â the highest amount his heart can safely beat per minute â is about 200 to 205. You can obtain the exact number by subtracting your teenâs age from 220.
About. 1  Smithsonian Earth is a commercial-free streaming service that offers unlimited access to original documentaries, short series, and Nature Scenes. Shot in stunning 4K Ultra HD resolution by filmmakers around the world, its programs will bring you closer than ever before to nature's most fascinating animals and wildest locations.
We are all about visiting museums and, like any opportunivore, we like to do it for free. We want people to know when that elusive free day is at the museum in your city. Check back for additional cities and museums and follow us on Twitter or Facebook for updates & events. Browse for museums by city. Click on the name of the museum for more information. Select the calendar link to view the free days by month.