Some questions, I've found each of these to have significant impact on comfort levels: - Stand in one position for a long time? (I've found it's best to not st

Some questions, I've found each of these to have significant impact on comfort levels: - Stand in one position for a long time? (I've found it's best to not stand in the exact same position for too long) - Leaning / putting your weight on the desk? - Using an external keyboard or are you using the laptop keyboard? - Do you have a rubber mat or soft carpet surface under your feet? I'm no MD (except for computers :p), but if your lower back is hurting perhaps consider looking at your foot situation, maybe different / more supportive shoes or standing surface. It took me 3-6 months of consistent usage before the standing desk situation felt comfortable and natural. Now I hate sitting at a desk, it's uncomfortable (hah).