Fascinating Inventions You Never Knew Existed

Water Workout

This water treadmill might appear to be a hot tub at first glance, but with the moving bottom, you can run or walk while you’re inside. Great for healing after injury, this low-resistance workout is perfect for anyone, and it looks pretty cool, too!

The More You Know

There's such a thing as a fear of buttons.
The Eiffel Tower was inaugurated the same year Nintendo was founded.
It's a tradition in Ireland that if you donated a pint of blood, they give you a pint of Guinness to replace the iron.
You can hear a blue whale's heartbeat from more than 2 miles away.

Post originally appeared on Upbeat News.