Jogging is a form of trotting or running at a slow or leisurely pace. The main intention is to increase physical fitness with less stress on the body than from faster running but more than walking, or to maintain a steady speed for longer periods of time. Performed over long distances, it is a form of aerobic endurance training.
According to a study by Stanford University School of Medicine, jogging is effective in increasing human lifespan, and decreasing the effects of aging, with benefits for the cardiovascular system. Jogging is useful for fighting obesity and staying healthy.
The National Cancer Institute has performed studies that suggest jogging and other types of aerobic exercise can reduce the risk of lung, colon, breast and prostate cancers, among others. It is suggested by the American Cancer Society that jogging for at least 30 minutes five days a week can help in cancer prevention.
While jogging on a treadmill will provide health benefits such as cancer prevention, and aid in weight loss, a study published in BMC Public Health reports that jogging outdoors can have the additional benefits of increased energy and concentration. Jogging outdoors is a better way to improve energy levels and advance mood than using a treadmill at the gym.
Jogging also prevents muscle and bone damage that often occurs with age, improves heart performance and blood circulation and assists in preserving a balanced weight gain.
A Danish study released in 2015 reported that "light" and "moderate" jogging were associated with reduced mortality compared to both non-jogging and "strenuous" jogging. The optimal amount per week was 1 to 2.4 hours, the optimal frequency was less than or equal to 3 times per week and the optimal speed was "slow" or "average". A recent meta-analysis on running/jogging and mortality, including more than 230,000 participants found that runners were at 27% lower risk of death than non-runners, during 5.5-35 year follow-ups.