Add Yahoo as a preferred source to see more of our stories on Google. Many of us set New Year’s fitness resolutions with every intention of seeing it through and achieving those goals. From running a ...

Sign up for CNN’s Life, But Greener newsletter. Our limited newsletter series guides you on how to minimize your personal role in the climate crisis — and reduce ...

With age comes a natural decline in cognitive function, even among otherwise healthy adults without dementia. A new study finds that a cognitive training program may boost production of a brain ...

A mouse study highlights the role of acetylcholine in behavioral flexibility, offering new insight into the brain mechanisms involved in addiction and obsessive compulsive disorder.

Discover which herbs can help you sleep better, such as valerian, chamomile, lavender, passionflower, and ashwagandha, and ...

Add Yahoo as a preferred source to see more of our stories on Google. When you’re learning something new, your brain is using acetylcholine, a neurotransmitter that has been shown to be deficient in ...