With the release of iOS 14.3 and watchOS 7.2, Apple Watch users now able to view their cardio fitness notifications in the Health app on iPhone, and start receiving a notification on Apple Watch if it falls within the low range. Apple Watch makes it simple to calculate low cardio fitness in watchOS 7, and cardio fitness alerts enable users to be more active for dramatic long-term health advantages.
Apple Watch users see the new category in the Health app on iPhone to review whether their cardio fitness level is classified as high, above average, below average, or even low, relative to people in their same age group and of the same gender, according to data from the Fitness Registry and Importance of Exercise National Database (FRIEND). They can also see how their cardio fitness level has changed over the past week, month, or year. If a user’s level falls within the low range, they can receive a notification on Apple Watch, along with guidance on improving it over time and having a conversation with their doctor.

As determined by VO2 max, cardiorespiratory fitness is the maximum amount of oxygen that the body can use during exercise, and it can be improved by physical activity. During intense outdoor walks, runs, or hikes, which many runners and other athletes track to enhance performance.
watchOS 7 enables Apple Watch users to use various sensors to estimate lower levels, including the optical heart sensor, the GPS, and the accelerometer. This is critical because direct VO2 max measurement usually involves a comprehensive clinical test with specialized equipment that most people do not have easy access to.
watchOS 7 also enables Apple Watch to take measurements of aerobic activity as users walk during the day, whether or not they are monitoring a workout. Apple Watch is better able to assess VO2 max for users with poor aerobic fitness with this advancement, who might not complete high-intensity workouts.

In a 2016 scientific statement, the American Heart Association recognized a growing link between low cardio fitness and a higher risk of significant health issues, such as heart disease, high blood pressure, and obesity, later in life. Research even suggests cardio fitness is a stronger predictor of mortality risk than common risk factors like smoking, diabetes, and hypertension.
“American Heart Association science associates low cardiorespiratory fitness levels with a higher risk of cardiovascular disease and all-cause mortality. The American Heart Association is focused on helping all people equitably achieve longer, healthier lives, and we believe that emerging technology solutions can empower individuals to manage their own health,” said Nancy Brown, American Heart Association CEO.
We may receive a portion of sales if you purchase a product through a link in this article at no cost to you, though all opinions are our own. For more information, please read our ethics statement. Please note that pricing and availability are subject to change.