Note that certain activities contain fewer examples than others, mainly because the users were not asked to perform strenuous activities (e.g., jogging, climbing stairs) for very long and because we thought that the patterns in other activities (e.g., standing) would become apparent quickly so that there would be no need to waste the users time literally “standing around.” Furthermore, certain activities, like standing and sitting, were only added after the study began, so we have no data for these activities for some users.