30 seconds timer with 10 seconds rest for the 7-Minute Workout
Ideal for the 7-Minute Workout proposed by the American College of Sports Medicine's Health & Fitness Journal. Or for any other activity that requires intervals. The timer goes on for about eleven minutes. http://well.blogs.nytimes.com/2013/05... Spanish: Un segundero de 30 segundos con descansos de diez segundos en intervalos. El reloj corre por más o menos once minutos
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4 Hours of Deep Focus Music for Studying - Concentration Music For Deep Thinking And Focus
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U.S. Flag Red Screen
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