Data collected 24/7 from wearables like a watch, bracelet, ring, or smart garment is analyzed to provide graphs of changes during the 24h period. You can see, for example, a decrease in BP during sleep and a BP surge after you wake up. The period around time you wake up is the most dangerous, as your BP can rise quickly, increasing the risk of events such as heart attack (acute myocardial infarction) and stroke.
The analysis also helps in detecting essential hypertension, fluctuation in diastolic BP (shown to be an independent risk factor), and fluctuation in BP during physical activity, an effect of anti-hypertensive medication. The combination of tracking both BP and ECG simultaneously, together with monitoring SpO2, hydration, and long-term and phasic stress levels (GSR), provides excellent tools for telemedicine and for maintaining self-awareness of your health any place and any time.