If you choose to start exercising you will improve your health, full stop. Being stuck in a chair all day isn't good, but there's no need to change your thinkin

If you choose to start exercising you will improve your health, full stop. Being stuck in a chair all day isn't good, but there's no need to change your thinking about exercise. They seem to be two independent things. From what I've read (I'm no kind of expert, so don't just trust my interpretation), is that sitting can interfere with your blood circulation. It constricts blood flow to your legs, and when you're sitting you aren't contracting your leg muscles which is part of what helps move blood around your lower body. It's not so much that sitting itself is bad for you; it's sitting for so long without moving. So just... move around. I love having a sit/stand desk but if that isn't something you can do then just get in the habit of frequently getting up from your desk and walking around a bit. If you need to think about something, do it while you walk. Pretend you have a smoking habit and you need to get up for a cigarette every 20 or 30 minutes. Once you get used to frequently moving around you'll start to become sensitive to sitting down for too long. I can't sit through a movie at a movie theater anymore because I get this overwhelming urge to get up and move around.