Apple is getting so serious about health, it's started hosting heart-health events at Apple Stores

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Apple hosted its first health-focused event at its Union Square store in San Francisco on Monday evening. It started with a panel on the topic of heart health and ended with an walk around the block to demonstrate the activity features on the Apple Watch.

Apple has not previously hosted any dedicated health events at its Apple Stores, but it has scheduled three this month, including in Chicago and New York. The events are in support of Heart Month, as heart health is a big area of focus for the Apple Watch, which includes an optical sensor to measure the user's heart rate and (in the new version) an electrocardiogram to measure the heart's rhythm.

These events are yet another signal that the company is positioning health care is key to its future. Its executives have said as much, with the Tim Cook noting to CNBC's Jim Cramer that health will be the company's "greatest contribution to mankind." As it scales back in other departments, like self-driving cars, the company is growing its team and making some big investments in health.

The company's CEO Tim Cook even tweeted about the event on Tuesday: Read more