New research shows that your toothbrush is teeming with hundreds of never-before-seen viruses. Here's what we know.

Your toothbrushes and showerhead are bustling with life, according to a new study published in the journal Frontiers in Microbiomes, showing that more than 600 different viruses are teeming around you during your morning routine.

Researchers at Northwestern University studied two things that most people use everyday—their toothbrush and showerhead—to see what was living in each.