Physical exercise is any bodily activity that enhances or maintains physical fitness and overall health and wellness. It is performed for various reasons, including increasing growth and development, preventing aging, strengthening muscles and the cardiovascular system, honing athletic skills, weight loss or maintenance, and merely enjoyment. Frequent and regular physical exercise boosts the immune system and helps prevent " diseases of affluence" such as cardiovascular disease, type 2 diabetes, and obesity. It may also help prevent stress and depression, increase quality of sleep and act as a non-pharmaceutical sleep aid to treat diseases such as insomnia, help promote or maintain positive self-esteem, improve mental health, maintain steady digestion and treat constipation and gas, regulate fertility health, and augment an individual's sex appeal or body image, which has been found to be linked with higher levels of self-esteem. Childhood obesity is a growing global concern, and physical exercise may help decrease some of the effects of childhood and adult obesity. Some care providers call exercise the "miracle" or "wonder" drug—alluding to the wide variety of benefits that it can provide for many individuals.
In the United Kingdom two to four hours of light activity are recommended during working hours. This includes walking and standing. In the United States, the CDC/ACSM consensus statement and the Surgeon General's report states that every adult should participate in moderate exercise, such as walking, swimming, and household tasks, for a minimum of 30 minutes daily.
Usage examples of "physical exercise".
Life at the academy did not become easier for our portly friend, for despite drilling and the marching of his numerous demerits he grew no leaner, though he did seem to become both stronger and gain more endurance, both for physical exercise and the routine harassment that came with his girth.
It was as if she had indulged in some physical exercise belonging to her youth, and it had tired her to the extent that now she felt very old.
And most young women don't get the kind of physical exercise young men get.
I was badly in need of a day's distraction and some strenuous physical exercise.
His only known amusements were regular physical exercise and the dissection of military problems.
Ogilve was quite sure the man was a fanatic about physical exercise, too.
Ridgeway kept him at his books from dawn to dusk, with time out only for another passion of his, physical exercise of the classical Greek sort.