The 7 Minute Workout app (workout trainer) is a HIIT (High-intensity interval training) workout app. Stay on track with fitness goals. High-intensity interval training can quickly and effectively help you lose excess body weight and body fat. May also improve overall health and fitness level. The 7 minute workout app (workout trainer) is a full body workout for women and men that uses the Scientific High-Intensity Circuit Training (HICT or HIIT) to aid weight loss, increase lean muscle, and aerobic exercise endurance. Upper body workout includes arm workout, back workout and chest workout. Lower body workout includes leg workout trainer, butt workout, and ab workout for women and men.