Biochemist reveals 40-minute workout for busy professionals that can turn back aging

Many Americans work in offices. They struggle to find time for exercise. Biochemist Rhonda Patrick suggests the Norwegian 4×4 protocol. It involves four minutes of high-intensity exercise. This is followed by three minutes of rest, repeated four times. Studies show it improves cardiovascular fitness. It can reverse age-related heart changes. The workout is efficient and sustainable for busy people. Read below!