A company called Myant just released a new line of SMART UNDERWEAR called Skiin.

Here's how it works:  There are sensors sewn into the underwear and bras that track things like your heart rate, temperature, and hydration levels.

And then it can react to your body by automatically interacting with other smart things in your house.  Like, if you're hot, it will tell your Nest thermostat to lower the temperature.  Or if you're stressed, it could play calming music on Spotify.