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.
Your first night (Minecraft PE survival) [edit | edit source]. 1  Before you start playing, pause your game. 2  This guide will explain how to survive your first night in Minecraft PE. 3  The key difference between Minecraft PC and PE is the crafting. Although there is already several tutorials on how to do so, none are on the pe version. 2  The key difference between Minecraft PC and PE is the crafting. 3  The PC editions crafting system is based on shaped crafting, while this edition is based solely on the users knowledge of the tools, materials and crafting recipes.