Prolong feeling of sadness, loss of interests, angry outbursts, tiredness, sleep disturbances, anxiety, loss of appetite, slowed thinking, feeling of worthlessness, frequent/reoccurring of suicidal thoughts, unexplained physical problems and having a hard time thinking. [These are just a few symptoms]
They could go for a hike or a walk. Hikes in a nearby forest are a great way to see nature on a daily basis and free of cost. If in an non rural area, such as a city, walking around town is a great way to get more physical activity! Another great way is to visit a zoo; most zoo have walking distance between the different animals. You can get both the active and nature in that as well.
(And I can't think of another one sorry)
