ScienceInsights

Randy Gardner stayed awake for 11 days in 1964, and what happened to his body along the way reveals a lot about why sleep matters.

Learn how much sleep babies need at each age, plus practical tips on naps, sleep regressions, and helping your baby sleep more independently.

A clear breakdown of the different fluids involved in female sexual response, where they come from, and what the science actually says.

From prescription antivirals to OTC creams, here's what the evidence says about treating cold sores quickly and reducing how often they come back.

Sudafed's jittery side effects come down to chemistry. Learn why pseudoephedrine affects your whole body, not just your sinuses.

Facial flushing from Viagra is common but manageable. Learn what causes it and simple ways to reduce it, from adjusting your dose to lifestyle tweaks.

Painful pimples are usually deep and inflamed. Learn how to reduce the hurt and heal faster with simple, dermatologist-backed steps.

Toxic relationship habits often stem from attachment styles and emotional patterns you can actually change with the right skills.

Discover which activities genuinely help people with dementia stay engaged, from gentle movement and music to memory games and sensory experiences.

While you sleep, your brain clears waste, your immune system strengthens, and your body resets in ways that affect everything from hunger to heart health.