This is called a resting pulse. Some people like to check their pulse before and after they exercise. You check your pulse rate by counting the beats in a set period of time (at least 15 to 20 seconds) and multiplying that number to get the number of beats per minute.
If anyone knows the importance of keeping her mind on the game, it's Venus WIlliams. But the tennis superstar seemed somewhat distracted by the presence of her boyfriend Elio Pis as he joined her on court in Miami, where Venus and her sister Serena are competing in the 2013 Sony Open.
But this was no ordinary impromptu performance. Justin and his beautiful wife, Jessica Biel, 33, were in town for a close friend of Jessicaâs big day and he wanted to give her friend a big surprise! Find out what Justin told the crowd before hitting the stage!