2008 U.S. Physical Activity Guidelines• Aerobic exercise

– 2.5 hours per week of moderate intensity OR 1.25 hours vigorous intensity

– Segments should last for at least 10 minutes

– Additional health benefits• 5 hours (300 minutes) per week of moderate intensity

OR 2.5 hours per week of vigorous intensity

• Strength training– At least 2 days per week

– 8-12 repetitions of exercises for major muscle groups