In Reykjavik, teenagers have indoor activities like reading, watching TV, bowling, and listening to music during the winter months when there are only 4 hours of sunlight per day. However, some outdoor activities like skiing and skating are still possible thanks to lights on the slopes and rinks. Teenagers can also swim outdoors year-round in geothermally heated pools, even when it's cold. In the summer, there are almost 18 hours of daylight per day and teenagers spend much of their time doing outdoor activities like hiking and camping since the sun never fully sets.