You’re tired and you need an energy boost, but you don’t want the jitters from caffeine. What to do? In this week's video, we give you some chemistry-backed tips — one of which involves cats — to boost your productivity and stay awake without refilling the coffee cup. 

SOURCES:
Water in the Body - http://chemistry.about.com/od/waterch... 

Watching Cat Vids - http://www.sciencedirect.com/science/... 

Cute images/improved attention: http://journals.plos.org/plosone/arti...

Light and the Neurotransmitter Orexin - https://www.psychologytoday.com/blog/... 

Single Bout of Exercise - http://news.uga.edu/releases/article/... 

Water, Hydration and Health - http://www.ncbi.nlm.nih.gov/pmc/artic... 

Music and moderate task difficulty - http://www.ncbi.nlm.nih.gov/pubmed/18... 

Human-animal Interaction - http://www.researchgate.net/profile/E... 

Hypocretin/Orexin System - http://www.ncbi.nlm.nih.gov/pmc/artic...

On Dehydration - Nancy Clark’s Sports Nutrition Guidebook 5th Edition

What Favorite Songs Do to Our Brains - http://www.slate.com/articles/health_... 

Pleasure response from music - http://www.pnas.org/content/98/20/118... 

Blood components - http://faculty.stcc.edu/AandP/AP/AP2p...