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.
Meet the Williams sisters' baby brother: Venus is watched by her 71-year-old father's son and his 33-year-old wife (who's only one year older than the tennis star) The Williams family who are legends in the tennis world have a new addition to the home team as Venus was spotted greeting her father, his new young wife and their baby son.