If browsing the Apple App Store for a fitness app and going through the hundreds of choices is enough to make your brain explode, check out this new study from the University of Florida.
Researchers rounded up 30 popular free fitness apps for the iPhone, dissected what they do, and compared this against American College of Sports Medicine guidelines for physical activity.
In scoring the apps, researchers looked at everything from warm-ups, cool-downs and stretching to safety and assigned them a score for three separate categories: aerobic exercise, strength/resistance and flexibility.