I'm 21 and enjoy working from bed. I did it for a week or two when I was at my parent's house for break once and it totally destroyed my back. These days I only do it when it's especially cold out.

So fast. Ugh, I'm 27 and even just looking at these pics makes me cringe.

My back hurts just looking at the 4 images at the top of the article. Also the positions in the upper-left, upper-right, and image further down the page cause lots of elbow strain. I had several months of numbness in my hands from spending too much time resting on my elbows like these photos.

I've been doing this for years, my back is fine, and I'm 40. Cut this nonsense out.

Not to mention muscle atrophy, including cardiac output.