Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching Interval timer - 40 sec rounds / 20 sec rests (including links to 19 workout routines). and this video is uploaded by Dark Raven Wargaming & Time Taker at 2017-03-13T14:16:04-07:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [WJbQM6NPzJo]