Children will mimic the behavior of their parents in relation to physical exercise. Parents can thus promote physical activity and limit the amount of time children spend in front of screens which may decrease the risk of childhood obesity.
Physical exercise was said to decrease healthcare costs, increase the rate of job attendance, as well as increase the amount of effort women put into their jobs.
Environmental approaches appear promising: signs that encourage the use of stairs, as well as community campaigns, may increase exercise levels. The city of , , for example, blocks off 113 kilometers (70 mi) of roads on Sundays and holidays to make it easier for its citizens to get exercise. These are part of an effort to combat chronic diseases, including obesity.
The persistent long-term neurobiological effects of regular physical exercise are believed to be mediated by transient exercise-induced increases in the concentration of (e.g., , , , and ) and other in peripheral , which subsequently cross the and and bind to their associated in the brain. Upon binding to their receptors in and (i.e., and ), these biomolecules trigger intracellular that lead to biological responses – such as , , , and , among others – which ultimately mediate the exercise-induced improvements in cognitive function.