Here's some further data that shows standing, or at least standing regularly during the day is healthy, and it also helps us apparently think, work and study better too. Here's the info:
A study from the Texas A&M Health Science Center School of Public Health finds students with standing desks are more attentive than their seated counterparts. In fact, preliminary results show 12 percent greater on-task engagement in classrooms with standing desks, which equates to an extra seven minutes per hour of engaged instruction time. Read the full story on Science Daily.