I need to get outside. I've been cooped up for days.
With the introduction of technology and large amounts of schoolwork, many teens find themselves too busy to get outside for exercise on a daily basis.
One reason people are thought to get SAD in dreary climates is because it's colder and darker so they don't get outside as much.
They need space and a chance to get outside and run off excess energy and are not good for apartment dwellers.
You want to get outside during the morning or even after you have worked all day.
Because people are urged to wear sunscreen diligently and some people don't get outside much, it's easier now to have a vitamin D deficiency than in the past.