[dmackerman]

I've used an Aeron for close to 10 years, and it's the most comfortable and flexible chair for me. That being said, sitting down for 10 hours in any chair is not healthy.

I added a standing desk to my arsenal, and the routine of moving up and down every 40 minutes or so. Taking brisk 10-15 minute walks at least every 1.5-2 hours is crucial as well.

Core strength and flexibility have become so important to my fitness routine that if I go several days without exercising or stretching properly, I get pretty severe lower back pain.