Creatine: The Gym Junkie’s Secret Weapon or Just a Fancy Powder?
The body naturally produces creatine in the liver, kidneys and pancreas, and it’s a quick fuel source for muscles. Photograph: bymuratdeniz/Getty Images
Mental Health
Plastic Peril: Everyday Plastics Mess With Your Sleep—Like a Dodgy Long Black at Midnight
The internal clock is ‘incredibly important for physiology and overall health’. Photograph: Maria Korneeva/Getty Images