The part of the environment that helps people live in Korea is that there are many types of terrains and environments for people to travel to on the weekends or when they want to go get away from the hustle and bustle of city life. People tend to be very fit in Seoul because of the hills and the walking that they often have to do to get where they need to be. It is common to see old ladies go for a jog in the park. I even saw an old man effortlessly carry a tree up a steep hill by himself to his home.
For a day out, people enjoy going on hikes into the parks and mountains where the air is fresh. Some people enjoy taking a trip into the countryside to visit friends and family. The air in the countryside is much clearer than in the city, so people often see it as a healing trip. If people have a week or two for a vacation, they also enjoy taking a trip down to Busan, a coastal city famous for delicious seafood and beaches, or to Jeju Island, the Hawaii of Korea. Another terrain in Korea is the valley, which is located in Daegu. My Korean friend told me that this place is famously nicknamed Daefrica because they compare the hot temperatures to those of Africa.
The challenges that people face from living in this environment are that people, especially those with asthma or breathing difficulties, should stay inside or wear a mask because of the fine dust particles that blow into Seoul's and much of Korea's airspace from factories in neighboring China. In early March, the air quality was much worse than it is now.