outdoor mediation walking
VIDEO: A short and sweet walking meditation
01:17 - Source: CNN

Sign up for CNN’s Fitness, But Better newsletter series. Our seven-part guide will help you ease into a healthy routine, backed by experts.

CNN  — 

These days, many people find it hard to unplug. Inflation, global warming and gun violence are on the rise. Bullies proliferate on social media. The 24/7 news cycle constantly blares distressing news, and people often face difficult personal or professional situations.

About half of Americans said they experienced stress within the past day, according to a Gallup Poll survey from last October, a finding that was consistent for most of 2022. Personal finances and current and political events were major sources of stress for one-third or more of adults, a survey from CNN in partnership with the Kaiser Family Foundation found in October.

Stress isn’t inherently bad, said Richard Scrivener, a personal trainer and product development manager at London’s Trainfitness, an education technology company. Stressing your muscles through weight training, for example, leads to beneficial changes. In addition, short-term stress in healthy people typically isn’t a hazard. “But if stress is continuous, especially in older or unhealthy individuals, the long-term effects of the response to stress may lead to significant health issues,” Scrivener said.

Can stress make you sick?

Stress occurs when you face a new, unpredictable or threatening situation, and you don’t know whether you can manage it successfully, said clinical psychologist Dr. Karmel Choi, an assistant professor in the Center for Precision Psychiatry at Harvard Medical School and Massachusetts General Hospital in Boston.

When you’re physically or emotionally stressed, your body snaps into fight-or-flight mode. Cortisol rushes through your system, signaling your body to release glucose. Glucose, in turn, provides energy to your muscles so you are better prepared to fight off a threat or run away. During this cortisol rush, your heart rate may rise, your breathing may become rapid, and you may feel dizzy or nauseated.

If you truly needed to fight or flee a predator, your cortisol levels would drop back down once the conflict was over. When you’re chronically stressed, however, those levels stay elevated.

Remaining in that heightened state is no good since high levels of cortisol can exacerbate health conditions such as cardiovascular disease, diabetes and chronic gastrointestinal problems, according to the Cleveland Clinic. Stress can also cause or contribute to anxiety, irritability, poor sleep, substance abuse, chronic distrust or worry, and more.

How to relieve stress

Luckily, there are many ways to combat stress. Keep a daily routine, get plenty of sleep, eat healthy foods, and limit your time following the news or engaging in social media, recommends the World Health Organization. It also helps to stay connected with others and to employ calming practices such as meditation and deep breathing. One of the most successful tools, though, is physical activity.

Get stress relief by exercising outdoors. Spending time in nature can boost mental and physical health, according to research.

“Exercise is remarkably effective for managing psychological stress,” Choi said. “Exercise doesn’t remove what’s causing the stress, but it can boost mood, reduce tension and improve sleep — all of which are impacted by stress — and ultimately this can support people to approach their challenges in a more balanced way.”

Numerous studies back up the positive effect of exercise on stress. Physical activity, and especially exercise, significantly reduced the symptoms of anxiety in a study published in Advances in Experimental Medicine and Biology, for example. Similarly, a Frontiers in Psychology study of university students found that regularly engaging in low- to moderate-intensity aerobic exercises for six weeks helped alleviate their depressive symptoms and perceived stress.

Get moving to release feel-good chemicals

The reason exercise is so effective in squashing stress is fairly simple. Exercise causes your body to produce more endorphins, which are neurotransmitters that boost your mood. Movement also combats elevated levels of the stress hormone cortisol while improving blood flow.

Aerobic workouts, such as running, dancing and boxing, produce lots of mood-boosting endorphins that relieve stress. But gentler exercise such as walking works, too.