Not only is standing better for your health, it also strengthens your focus. This is because the stress of holding your posture improves selective attention.
The Stroop effect
The researchers had university students alternate between standing and sitting while testing their reaction time to a task of naming a color. The words printed behind the color either matched or conflicted the one in text (e.g., the word “blue” printed in red ink instead of blue ink).
Participants seemed to process congruent data — when the word and print color matched — at the same speed, or slightly slower, when they were sitting compared to when they were standing. But they processed incongruent data – when the word and print color did not match — more quickly when they were on their feet.
The study demonstrates that not all multitasking crimps productivity. In fact, overcompensating for the added stress on your feet sharpens your focus. As someone who just bought a standing desk myself (I highly recommend the Spark desk by Ergodriven for anyone starting out), I believe the studies to be true.
Nevertheless, this latest study suggests that researchers consider other postures than sitting as part of their cognitive testing.