 Sun, 10 Jan 2010
                                                                    
                                                                      Answered on
                                                                    
                                                                    Sun, 10 Jan 2010
                                                                    
                                                                      Answered on 
                                                                 Sun, 10 Jan 2010
                                                                    
                                                                      Last reviewed on
                                                                    
                                                                    Sun, 10 Jan 2010
                                                                    
                                                                      Last reviewed on   
                                                                 
											
								Hi.. The heart rate is determined by various parameters. they can be caused by emotional variations and physicak stress. They other known causes could be because of anaemia, hyperthyroidism... If the problem has been in the recent pastand is persisting you can get it checked by a doctor...
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