weekend
Jessica Pettway for TIME

You Asked: Is It Bad to Be Inside All Day?

Shelter is a basic human need. But staying indoors all day may fuel anxiety, insomnia and that too-familiar sense that humans just aren't meant to spend the whole day inside.

You miss a lot when you surround yourself with walls, and sunlight tops the list. Exposure to sun-strength rays helps calibrate your body’s circadian “clock”, which regulates everything from appetite and sleep schedules to mood and energy levels, says Kenneth Wright, director of the Sleep and Chronobiology Laboratory at University of Colorado, Boulder.

Wright’s research has shown electric lighting and an absence of natural light can throw off your internal rhythms. He says jet lag and an erratic sleep-wake schedule (the kind shift workers endure) also disrupt your circadian clock. Research has linked working nights to impaired health and wellbeing, increased risk for obesity, diabetes, substance abuse, depression and other diseases, Wright says.

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