Study: Just 30 Minutes Of High-Intensity Exercise Weekly Provides Health Benefits

Key Points:

• New research from the Norwegian University of Science and Technology suggests that just 30 minutes of high-intensity exercise per week can improve heart health, challenging the current U.S. guideline of 150 minutes of moderate or 75 minutes of vigorous exercise weekly.
• High-intensity exercise, defined as activity that raises heart rate to at least 85% of maximum and causes breathlessness, should be spread across the week for optimal benefits, such as blood pressure and blood sugar control.
• Experts caution that while short bursts of vigorous exercise are beneficial, they may not replace longer workouts, and individuals with health risks should consult a clinician before starting intense exercise.
• Exercise provides extensive health benefits beyond cardiovascular improvements, including enhanced mood, bone strength, cancer risk reduction, muscle maintenance, and better sleep, making it as effective as several medications.
• The key message is that any amount of physical activity is better than none, and people should focus on staying active regularly rather than striving for the "perfect" workout duration or intensity.