Teachers or even parents take note. If you want your students or kids respectably, to be more attentive and focus while studying, then get them bouncy balls as seats. Let them sit on mobile rubber yoga balls, instead on those hard wooden chairs.
According to a teacher at Westtown-Thornbury Elementary School, says that sitting on the brightly colored bouncy balls can help students focus better on their lessons and also building core strength at the same time. [source]
I have always knew my lack of attention in class back then, had nothing to do with my brain, but my bum.