Hellow guys, Welcome to my website, and you are watching Interval timer - 30 sec rounds / 15 sec rests (including links to 3 workout routines). and this vIdeo is uploaded by Dark Raven Wargaming & Time Taker at 2018-01-13T05:28:37-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.