Analysis by Dr. Joseph MercolaFact Checked STORY AT-A-GLANCE Sleep and exercise impact cognitive performance and decline. However, data suggest that higher-intensity physical activity is not enough to mitigate the rapid cognitive decline that is associated with insufficient sleep A suboptimal number of sleep hours can increase your risk of cardiovascular disease, anxiety, depression, weakened immune system, migraine headaches, poor athletic performance, loss of bone mass, visible signs of aging, traffic accidents, poor decision-making and more One study found the financial cost of insufficient sleep and sleep deprivation is 2% of a country’s gross domestic product (GDP), which for the U.S. is
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