The Gymboss interval timer makes timing your workouts easy and accurate. This timer is great for HIIT (High Intensity Interval Training), Kettlebell, Tabata training. Working out with the Gymboss makes your workouts more concise and accurate for when you have work periods and rest periods. It's easy to set up! Intervals can be set to the second. You can set the … [Read more...] about Gymboss Review & Giveaway