No. As handsonanatomist mentions it has to do with blood flow to the myocardium(heart muscle itself). The heart muscle itself only receives oxygen during diastole(relaxation), but as heart rate increases the relative length of diastole shortens compared to systole(heart contraction). TLDR; your heart gets tired because it only gets oxygen while relaxed, and the relative amount of time spent relaxing is less.
Mine: is a possessive pronoun. Example :That is mine. My: is a possessive adjective. Example : That is my car. This is my iPodâ --- - This iPod is mine. This is my pen ------ This pen is mine. This is my car ------ This car is mine. Those are my paintings ------ those paintings are mine.
What is the difference between War and Battle? â¢ A battle is a small part in a war and a war is made up of several battles. â¢ Battle is actual fighting that takes place while war is more of strategy and planning. â¢ Battle is the real action in a war. â¢ The outcome of a battle does not decide the winner of a war. â¢ Battles are of smaller duration than wars.