Smoking makes the heart beat faster.

The average heart rate of smokers is 30% faster than that of non-smokers, which obviously affects the effect of your exercise. Because it is difficult for your heart to achieve sufficient circulation function, you need to use more energy in training. Increased heart rate and blood pressure will reduce your overall performance. When you do regular exercise, your ability to exercise your muscles will decrease.

Smoking will reduce oxygen levels and hinder muscle growth.

When your muscles lack oxygen, your muscle growth drops directly. Smoking will reduce the oxygen supply to muscles. First of all, by reducing the rate of blood flow to muscles, you can limit the oxygen in the blood that muscles get. Secondly, because smokers produce more phlegm, which hinders breathing, limits breathing activities and reduces the amount of oxygen entering your blood, the oxygen obtained by muscles naturally decreases; Thirdly, the content of carbon monoxide in the blood of smokers is high, which also reduces the oxygen content.

How does breathing affect muscle growth

Carbon monoxide in cigarette smoke can occupy hemoglobin in blood and squeeze out oxygen. Tar in cigarettes will also accumulate in your respiratory tract, limiting the amount of oxygen you inhale. The presence of tar will also hinder the natural cleaning mechanism of your lungs, allow other pollutants to accumulate and reduce airflow. When your vital capacity and oxygen supply decrease, your muscles will be hungry and need oxygen for growth and development.