Going outdoors to read a book can distract you from any stress or problems you may find in your life, but stress relief is not the only benefit from going outdoors. 

For example, going outdoors and being surrounded by trees, fresh-air, and nature can help you concentrate and think, which is perfect for completing school work or reading a book. Fresh-air can also help you by stimulating your brain by raising oxygen levels in your brain, which increases serotonin levels. Serotonin is what alters your mood, in short, making you happier. 

Finding hobbies are a great way to reduce stress and provide a sense of happiness. Outdoor hobbies can be the best way to introduce yourself to nature and a great vitamin D source, the sun. Occupying your mind with hobbies that do not need electronic devices can help your health drastically. Simply taking a walk outside can strengthen your bones and muscles. Reading outdoors can disconnect you from your phone which can lead to heightened moods and the sunlight can boost your energy. 

Some hobbies that you may be interested in are hiking, where you can exercise while enjoying the outdoors. Gardening is a very fun and interactive hobby that involves growing plants and flowers from their seeds. Running/walking is a great way to get your daily exercise and simultaneously get some sunlight. No matter what you do, being outdoors is proven to be very beneficial for your body and mind.