Hellow guys, Welcome to my website, and you are watching Interval timer - 30 sec rounds / 10 sec rests (including links to 4 workout routines). and this vIdeo is uploaded by Dark Raven Wargaming & Time Taker at 2017-01-15T05:50:07-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.