From the folks at Quartz – these are just the highlights – check out the full article here

The comprehensive, fully caffeinated guide to coffee at work

• Surprise! Coffee keeps you alert
• Coffee eases the pain of working at a desk
• Coffee is a social lubricant 
• Even without the coffee, coffee shops are good places to work [rather, get work done]
• The best time for a coffee is around 2 p.m.
• Coffee can make a stressful situation more stressful
• The coffee break is a 20th century invention
• It’s also an invention of Madison Ave, with an assist from a behavioral psychologist
• Coffee may be a life saver, especially for older workers.
• It even works with decaf
• Baristas drink the most coffee