A pulmonary embolism occurs when a clot deep in your vein, most commonly in your leg, travels to your lungs from its original spot, blocking some or even all of your blood supply, according to the American Heart Association. This can prevent vital organs from getting the oxygen and blood they need to properly function, which can be fatal.
Green, a self-proclaimed “serial health tracker,” has experienced a pulmonary embolism before, meaning he had all the more reason to pay attention to what his heart is doing. While he suffers from generalised anxiety disorder, he told The Telegraph he was experiencing other symptoms during the time he received the heart rate alert, which pushed him to believe that he wasn’t experiencing a panic attack, but rather “something more.”
HeartWatch monitors your heart rate data across four views: Waking, Regular, Workout, and Sleeping. Each view is isolated so you can learn to notice unusual changes in how your heart is beating, according to the app’s official page.
After Green’s diagnosis, his doctors performed a couple of ultrasounds and prescribed him blood thinners, which interfere with the proteins in your body responsible for blood clots, working to minimize the damage.
If you're looking to avoid any blood complications, check out the best 5 foods for your heart.
This article originally appeared on Men's Health