Scientists put shrimp on a treadmill

So one scientist put a shrimp on a tiny treadmill to examine how diseases impact their performance.

The shrimp treadmill, invented and built by David Scholnick, from Pacific University, allows researchers to measure the activity of an exercising shrimp for a set period of time at known speed and oxygen levels. "Healthy shrimp ran and swam at treadmill speeds of up to 20 meters per minute [66 feet per minute] for hours with little indication of fatigue," explained Scholnick.

To further challenge the shrimp, the researchers designed a small backpack made of duct tape to add extra load. With the extra weight and lowered oxygen, they were active for up to an hour.

Video.