It's very obvious that spending too much time sitting down like blogging activity or simply doing research on the computer all day perhaps should be discourage. You wouldn't want to experience spine problem or osteoporosis for having the same position all day. Do not abuse the fact that we have strong spinal cord or we have advance technology from laser spine institute that can help fix the problem. Caring for your health and awareness would still a good practice. Stretch your body more often and avoid too much time sitting. Also drink milk as it is a good source for calcium that our body bones need. I feel back pain lots of time though especially if I'm blogging. Definitely, a not healthy activity and I should minimize it.