Fitness

People who spent at least two hours outside—either all at once or totaled over several shorter visits—were more likely to report good health and psychological well-being. Jason G. Goldman reports.

The slimy stuff has a surprisingly wide array of beneficial biological functions

AI finds new insights into molecular tumor properties using images of cells and tissue

Walking without shoes builds calluses, but that does not limit sensation

Author and self-described fossil fanatic Brian Switek talks about his new book Skeleton Keys: The Secret Life of Bone.

Mice that were fed bacteria isolated from elite athletes logged more treadmill time than other mice that got bacteria found in yogurt.

The chemical these bacteria produce appears to enhance athleticism

We can now identify risk factors that seem to affect a developing fetus

Bacteria live on our eyeballs, and understanding their role could help treat common eye diseases

As widespread as the BMI method of body measurement is, the ever-growing consensus is that this one-size-fits-all approach may be flawed

Rather than wiping microbes out, antiperspirants and foot powders increased the diversity of microbial flora in armpits and between toes. Christopher Intagliata reports.

Fish are high in omega-3 fatty acids. But what if you can't eat seafood? Can omega-3 enriched eggs or peanut butter provide the same health benefits?