Seven Nation Army. Seven Nation Army (also stylized as 7 Nation Army) is a song by American rock duo The White Stripes. It was released as the lead single from their fourth studio album, Elephant, on March 7, 2003, and reached number one on the Modern Rock Tracksâmaintaining that position for three weeks.
A Dr. Kelly Traver , Internal Medicine, answered. To increase aerobic (cardiorespiratory) fitness, do higher-intensity workouts that get you up to 60 to 80 percent of your maximum heart rate for at least 20 to 30 minutes three times a week. This should be in addition to your base activity of 30 minutes a day.
The cardio guidelines for improved fitness levels include performing your chosen cardio activity for 20-60 mins at an intensity of 60-90% maximal heart rate (220-age), 3-5 days a week. Build a solid cardio foundation first by training at an intensity of 60-75% maximal heart rate for 30-60 minutes.