Whenever we run, climb stairs or walk fast, you must have felt that the heartbeat increases rapidly. This is common, but have you ever wondered why this happens? Let us understand in simple language what is the reason behind this.
muscles need energy
When we run or walk fast, the muscles of our body need more energy. To get this energy, the muscles need oxygen and nutrients, which reach the body through blood.
need to increase blood flow
In order to provide more energy to the muscles, the body needs to send more oxygen and nutrients. For this process, it becomes necessary to increase blood flow so that oxygen reaches the muscles quickly.
increased heart rate
The heart works to pump blood in our body. When we run or do any physical work, the heart needs to pump more blood to meet the body's demand. Because of this, the heart increases the speed of its beats, which pumps blood faster and oxygen reaches the muscles.
increased body temperature
Running also increases the body temperature, which is a natural process. To reduce this increased temperature, the body resorts to sweating. Blood is sent towards the skin so that the body temperature remains balanced and coolness is achieved.
Role of adrenaline hormone
While running or walking fast, the level of a hormone called adrenaline also increases in the body. This hormone gives energy to the body and helps in increasing the heartbeat. Due to adrenaline, the heart beats faster, which gives us enough energy during physical activities. In this way, whenever we run, the body needs more energy, for which the heart has to pump blood faster. This process is necessary to increase the supply of oxygen and nutrients to the muscles.
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