When was the last time you went outside just to enjoy nature? If it’s been a while, it might be time to head outdoors — especially if your mental health or productivity could use a boost. That’s because nature has been shown time and again to have healing benefits to those who simply spend time in the fresh air, around lush foliage, taking in incredible landscapes. But what exactly are the benefits of spending time in nature? Here are four ways the outdoors can improve your mental health and stoke your productivity.