Home Le Test Hub reddit: the front page of the internet TIL rodents living outside of captivity still enjoy running in wheels because it gives them a self-rewarding "runner's high"

TIL rodents living outside of captivity still enjoy running in wheels because it gives them a self-rewarding "runner's high"

reddit: the front page of the internet 2017-12-10

TIL rodents living outside of captivity still enjoy running in wheels because it gives them a self-rewarding "runner's high" submitted by /u/chuckschwa to r/todayilearned [link] [comments]