Walking for health | Dopamine and focus | Tongue microbes

March 31, 2020 Edition Number of steps per day more important than step intensity Adults who took 8,000 or more steps a day had a reduced risk of death over the following decade than those who only walked 4,000 steps a day. Dopamine affects how brain decides whether a goal is worth the effort Researchers found that drugs like Ritalin may work as a study aid by shifting attention, through the brain chemical dopamine, from the challenges of undertaking a difficult mental task to its rewards. Technique reveals organization of tongue bacteria Using advanced imaging techniques, researchers revealed how different bacteria live together in communities on the human tongue. Popular Stories Novel coronavirus structure reveals targets for vaccines and treatments Study suggests new coronavirus may remain on surfaces for days How stress causes gray hair New blood test method may predict Alzheimer's disease Drug activates brown fat, improves glucose metabolism in healthy women