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Facial Exercises May Make You Look 3 Years Younger

The upper cheeks and bags under the eyes modestly improved starting at week eight (center) and, by week 20 (right), dermatologists rated the mid-face as more full and youthful.

Parenting the Fortnite Addict

A scene from the popular game Fortnite: Battle Royale.

A Perplexing Marijuana Side Effect Relieved by Hot Showers

Thomas Hodorowski quit smoking marijuana after learning his years-long bouts of nausea and vomiting were caused by his habit.

How to Protect Yourself From Mosquitoes and Ticks

The C.D.C. says tickborne diseases like Lyme are rising steadily in the Northeast, which has more trees now than a century ago.

Blurred Vision, Burning Eyes: This Is a Lasik Success?

Justin Puglisi undergoing Lasik eye surgery in Garden City, N.Y. The 15-minute procedure was performed 700,000 times last year.

Exercise vs. Standing? You Probably Need to Do Both

Eric L. Adams, the Brooklyn borough president, uses a standing desk as part of his fitness routine.

How Karate Helped an Aging Expert Age Better

Dr. Kirk Daffner practices his karate moves as his mentor, George Gonis, looks on.

Is There an Optimal Diet for Humans?

Members of the Hadza tribe in Tanzania on a zebra hunt.

A Competitive Team Sport. For Your Dog.

At the Scallywags Flyball Fever Tournament in Halethorpe, Md., last summer, Corey, an Australian shepherd, left, and Bella, an American shepherd, competed in a relay race.

Is There an Optimal Diet for Humans?

Members of the Hadza tribe in Tanzania on a zebra hunt.

Can Kindness Be Taught?

Prekindergarten students at P.S. 212 in Jackson Heights, Queens, observe their “belly buddies” — stuffed animals placed on their stomachs — as they rise and fall with their breath. The lesson is part of the Kindness Curriculum.

A Before-School Exercise Program May Help Children Thrive

A one-hour, before-school exercise program does seem likely to improve young people’s health and happiness.

From Brooklyn to India, in Search of the Secret to Parenthood

The author, Diksha Basu, and her husband, Mikey McCleary, with their daughter, Sky, at 6 weeks old in their apartment in Williamsburg, Brooklyn.

The Ascension of Cauliflower

After a Cancer Diagnosis, Playing the Odds

The author, Katie Palay, with her husband and child.

How to Know When a Child’s Flu Turns Serious

Ethan Lasorsa, 12, of Macungie, Pa., was treated for flu and an ear infection in the pediatric ward at Lehigh Valley Hospital-Cedar Crest in Allentown, Pa.