ScienceInsights

Unexplained crying often has real causes, from stress and poor sleep to hormonal shifts and depression. Here's what your tears might be telling you.

Bragging feels good because your brain literally rewards it — but the social costs are real. Here's what drives the urge to boast and why it's hard to quit.

Learn how to calculate your target heart rate for exercise, understand training zones, and use this information to work out smarter.

Period clots are common, but size and frequency matter. Learn what's normal, what causes heavy clotting, and when it's worth talking to a doctor.

Practical, everyday ways to support your child's language development at home, plus guidance on when to seek help from a speech professional.

Adderall suppresses thirst and causes dry mouth, making dehydration easy to miss. Here's how to stay hydrated while taking it.

Hydrocodone affects your brain, hormones, and pain tolerance over time. Learn what side effects, withdrawal, and overdose risks actually look like.

Simple daily habits like proper nail trimming and well-fitting shoes can go a long way toward preventing painful ingrown toenails.

Apples can fit into a diabetes-friendly diet. Learn which varieties are lower in sugar and how serving size and form matter more than you'd expect.

Deep acne scars respond to different treatments depending on their type. Learn which procedures work for rolling, ice pick, and boxcar scars.