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.
Washington is one of the worldâs best museum and monument cities, with the Smithsonian as a top draw. And since 2015 marks the 150th anniversary of Abraham Lincolnâs assassination, many artifacts including the famous top hat of America's 16th president and the pistol that fired the deadly shot will be on display.rticle The best free things to do in 2015 Travel doesnât have to break the bank: hereâs our guide to the best travel experiences that â like love â donât cost a thing. 1... Travel doesnât have to break the bank: hereâs our guide to the best travel experiences that â like love â donât cost a thing. 1.