Physical exercise means the regular movement of our limbs. It is beyond doubt very useful to us. The proverb goes, “Health is at the root of all happiness.” So to be happy one should take regular physical exercise. Sometimes the terms ‘dynamic’ and ‘static’ are used. ‘Dynamic’ exercises such as steady running tend to produce a lowering of the diastolic blood pressure during exercise, due to the improved blood flow. Conversely, ‘static’ exercise (such as weight-lifting) can cause the systolic pressure to rise significantly, albeit transiently, during the performance of the exercise. There are different kinds of physical exercises walking, running, swimming, cycling, etc. Walking and Swimming is the best kinds of physical exercise which are helpful for people of all ages. Physical exercise makes our muscles strong and stout. It helps in digesting food, in the free circulation of blood and keeping our min fresh. As a result, the people who take physical exercise regularly are free from various kinds of diseases. A lack of physical activity causes approximately 6% of the burden of disease from coronary heart disease, 7% of type 2 diabetes, 10% of breast cancer and 10% of colon cancer worldwide. Overall, physical inactivity causes 9% of premature mortality worldwide. But physical exercise should be taken at a proper time and place. We should take physical exercise in an open field early in the morning or in the afternoon. As health is wealth, we should take physical exercise regularly to keep this wealth good. If it is taken at noon in the sun, it brings us some negative results. It rather acts upon our health to a great extent. Physical exercise generally improved sleep for most people and may help with insomnia, but there is insufficient evidence to draw detailed conclusions about the relationship between exercise and sleep. A 2018 systematic review and meta-analysis suggested that physical exercise can improve sleep quality in people with insomnia. It should also be remembered that too much physical exercise is harmful to health. Needless to say that over exercise can deform and fracture different organs of our body.