CNN Health

If you're wondering why your social media timeline looks like a Crossfit box, you can thank the newest online activism trend: The #22PushUpChallenge. Let's discuss that number.

Florida Department of Health Investigators said Wednesday that there are three new non-travel-related cases of the Zika virus in their state, bringing the total number of non-travel-related cases to 33.

Police say she was called an "idiot" so often and for so long that it was the word that sprung to her young mind when a social worker asked her name.

With goat-leather leggings and a brown bear fur hat, the 5,300-year-old mummy must have strutted the Alps with an eclectic style.

For the first time, the United Nations has acknowledged its own involvement in a devastating cholera outbreak in Haiti in 2010 that killed at least 10,000 people.

Bronze medalists tend to feel happier than silver medalists and it all comes down to "counterfactual thinking," experts say.

The word "relatable" isn't often used to describe supermodels -- unless we're talking about Chrissy Teigen.

A cat named Baby took on seven pit bulls, sending one dog and its owner to the doctor.

An unidentified patient in Florida is being treated after being infected with a brain-eating amoeba last week, according to the Florida Department of Health. It is the fourth known case this year of infection by the parasite Naegleria fowleri.

Knuckle cracking may sound horrible, but these scans show knuckle cracking is actually good for your hands.

If you've read the news lately, you've probably learned about the tragic events involving two women who went out for a run and never made it home.

Shane Todd, a familiar face in the Centers for Disease Control and Prevention's well-known "Tips From Former Smokers" campaign, has died from complications of cancer. He was 49.

The Food and Drug Administration put the experimental drug esketamine (also known as ketamine) on the fast track to official approval for use in treating major depression, Janssen Pharmaceutical announced Tuesday. This designated "breakthrough therapy" would offer psychiatrists a new method for treating patients with suicidal tendencies and would qualify as the first new treatment for major depressive disorder in about half a century.

A new study out of Australia confirms what we probably already knew: People who dance and go to concerts regularly are pretty happy. While it may seem obvious, comparing happiness and the enjoyment of music can actually tell us a lot about how music affects us psychologically.

There were 27 heroin overdoses within four hours, including one death, in Huntington, West Virginia on Monday. Officials believe the drug may be laced with something making it particularly dangerous.

Amidst the billions of stars in the Milky Way, astronomers have witnessed the evolution of one as it exploded in what's known as a classical nova after hibernating for years, according to a new study (PDF). It is the first time the transition of a white dwarf star with a low and unstable mass-transfer rate to a classical nova eruption has been observed, study author Przemek Mróz said.

Hey, come look at this weird sea creature. It's so purple! And unnervingly alert!

A Georgia woman, paralyzed for eight years, shocked friends and family when she got up from her wheelchair and walked down the aisle at her wedding.