Smile Forward

The ADA recommends every 3-4 months. Most people go 6-8. Here's what happens to bristle performance in that window - and why the interval matters more than most people think

Not every morning routine habit is equally useful. Here are the ones with the strongest research behind them, ranked by impact, with the science explained plainly.

About 1 billion plastic toothbrushes are thrown away in the US every year. None of them are recyclable. Here's exactly where they go and how long they stay there.

Most affirmations don't work. Research shows exactly why - and what the ones that do have in common. Here's what the studies say, and how to use that in your morning routine.

Research shows plastic toothbrush bristles shed millions of microplastic particles per year directly into your mouth. Here's what the studies found and what you can do about it.

Bamboo has tensile strength comparable to steel, grows three feet a day, and has been solving human problems for 5,000 years. So why did we spend 80 years replacing it with plastic?

For decades, self-affirmation was dismissed as self-help fluff. Then the neuroscientists ran the fMRI studies. Here's what they found.

The nylon toothbrush was invented in 1938. Almost nothing about it has changed since. Here's why, who benefits from the status quo, and what a better design actually looks like.

Neuroscientists have mapped what happens to your brain in the minutes right after waking. The window is short, the research is clear, and most people waste it entirely.