As the United States celebrates its 250th anniversary, many Americans are taking extra notice of all the things the country has to offer.One such case is our access to vast wilderness.Today, the nation's national parks are bustling tourist attractions, but they may also serve as vital resources for public health, experts say.The most immediate health boost comes from physical movement.HIKERS FACE URGENT GRAND CANYON HEAT WARNING AFTER TEEN’S DEATH ON POPULAR TRAILGuidelines from the Centers for Disease Control and Prevention show that regular physical activity is crucial for reducing obesity, improving sleep quality and lowering the risk of chronic illnesses.The nation's public lands include parks, trails and open spaces that encourage outdoor recreation and physical activity.Beyond physical fitness, national parks contribute to documented mental health benefits.
(iStock)A review by the Community Preventive Services Task Force (CPSTF) found that implementing park, trail and greenway infrastructure directly increases physical activity across communities.AMERICA'S LIFESPAN HAS DOUBLED SINCE 1776 — EXPERTS REVEAL WHAT CHANGEDWhen people walk, hike or bike through national parks, they are actively lowering their blood pressure, boosting immune function and reducing overall mortality, data shows.CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTERBeyond physical fitness, national parks may contribute to documented mental health benefits.Previous research has demonstrated that direct exposure to nature significantly reduces physiological stress, lowers heart rates and decreases levels of stress hormones, like cortisol.Engaging in educational activities and lifelong learning preserves brain function, improves memory and helps stave off age-related cognitive decline, research shows.(iStock)This research also shows that natural environments boost attention span, combat mental fatigue and improve cognitive performance.CLICK HERE FOR MORE HEALTH STORIESParks also act as natur...