And I'm not just talking about your health - it could literally cost you thousands of dollars. Here's how being cooped up affects you, according to Men's Health magazine: · First, you'll need to buy bigger clothes. Because people who don't take part in outdoor activities have a higher risk of being overweight. · If you don't spend enough time outside, you'll also need allergy shots and an air purifier. Because the dust and mold inside your home and office can aggravate allergies and asthma, as much, if not more, than the pollen outside. · You'll also be less productive at work if you don't get outside. Because the stale air in your office can cause "sick building syndrome" - it happens when you're confined in a tightly sealed building where the air is recycled. So you're breathing everyone's germs, sniffing indoor air pollutants, and inhaling the chemicals from office machines. It causes headaches, fatigue, and difficulty concentrating. So you can kiss that annual bonus goodbye. · Another way being cooped up can cost you. You'll need therapy. · Too little time outdoors can trigger depression caused by a lack of sunlight. · And when you get sick, the more vitamin D you absorb from sunlight, the sooner you'll get better. So not getting enough sun means extra sick days. A vitamin D deficiency also puts you at risk for high blood pressure. So all told, here's what it'll cost you if you stay cooped up indoors all the time. Let's see (pretend to be calculating), the new clothes, the allergy shots, the air purifier, the loss of your annual bonus, extra sick days, therapy, blood pressure medication and doctor's visits adds up to: about $6,700 dollars annually. The cost of getting fresh air? Priceless.