This app helps you to perform this 7 minutes full workout (12 exercices), by providing you a timer and a log. This routine of 12 exercises is a complete workout based on the latest fitness research, and it only takes 7 minutes. (12 exercices of 30sec, with pauses of 10sec)This workout has been defined by Brett Klika & Chris Jordan(See : http://journals.lww.com/acsm-healthfitness/Fulltext/2013/05000/HIGH_INTENSITY_CIRCUIT_TRAINING_USING_BODY_WEIGHT_.5.aspx)You can see videos of each exercices here:http://lifehacker.com/these-12-videos-show-the-proper-form-for-a-7-minute-ful-499199366Mr. Jordan says : "The exercises should be performed in rapid succession, allowing 30 seconds for each, while, throughout, the intensity hovers at about an 8 on a discomfort scale of 1 to 10. Those seven minutes should be, in a word, unpleasant. The upside is, after seven minutes, you’re done."**Features** :- Free, Simple and lite- adjust the duration- manage a log- pause/resume/next/previous exercice- Text-to-speech available- lock screen during routineIf you start, you should begin with a short time, and increase it, in the future.