Consider this claim: Standing while you work at a computer is better for your health than sitting. Which is the strongest evidence to support the claim? Dan Herrera, a health and fitness blogger, says that since switching to a standing desk,he has experienced greater mental alertness and physical energy. Sales of standing desks have risen dramatically in recent years, which health journalist Anna Sawyer says is part of a larger trend of Americans becoming more health-conscious. A study published in a journal devoted to physical activity found that subjects burned only 80 calories per hour while sitting, whereas they burned 210 calories per hour while walking. In one study, office workers who switched from traditional sitting arrangements to standing desks reported better moods, more energy, and less fatigue.