You may have played with a yo-yo before -- perhaps you’ve even walked the dog -- but do you know about the physics behind what makes a yo-yo sleep and wake up? Learn all about inertia, angular momentum and the history of the yo-yo in this episode of SYSK.

YO! Y'all gotta come check out the National Yo-Yo Museum in Chico. It's totally dope.

Eric Lindeen (Sweden) was able to keep a total of eight yo-yo's spinning simultaneously up on hooks at the studios of Guinness Rekord TV, Stockholm, Sweden on 28 November 2001.

" (Male Groups) Boys, Boys, Boys" - Because Of You This is the 5th track from the album " (Male Groups) Boys, Boys, Boys". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" Boys, Boys, Boys, Vol. 2" - All Or Nothing This is the 6th track from the album " Boys, Boys, Boys, Vol. 2". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" Boys, Boys, Boys, Vol. 2" - My Everything This is the 10th track from the album " Boys, Boys, Boys, Vol. 2". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" (Male Groups) Boys, Boys, Boys" - You Got It This is the 9th track from the album " (Male Groups) Boys, Boys, Boys". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" Boys, Boys, Boys, Vol. 2" - Just Got Paid This is the 3rd track from the album " Boys, Boys, Boys, Vol. 2". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" (Male Groups) Boys, Boys, Boys" - Motownphilly This is the 4th track from the album " (Male Groups) Boys, Boys, Boys". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."

" Boys, Boys, Boys, Vol. 2" - It's Going To Be Me This is the 1st track from the album " Boys, Boys, Boys, Vol. 2". Released: 2009 Genre: Rock Version: Karaoke Version with Backup Vocals"MMO Group, Inc."