Home measurements and wearable data
Your watch and your blood pressure monitor produce more data than any lab, and almost nobody knows how to read it. These guides explain what each one measures, what is normal for your age and which changes deserve attention.
Heart rate variability (HRV): what it is, values by age and why it changes so much
What heart rate variability measures, an HRV table by age and sex, what lowers it (alcohol, sleep, illness, training) and how to read your own.
High diastolic blood pressure: what the bottom number means and what to do when it rises alone
What a high diastolic with a normal systolic means, where your number falls under the guidelines, what raises it and what to record before consulting.
Normal blood pressure: the table, what changes with age and how to measure it at home
What normal blood pressure is according to the guidelines, why the table by age does not exist, how to measure it properly at home for seven days and when to consult.
Normal resting heart rate by age: table and what it means when it changes
Normal resting heart rate by age in a table, why your usual level matters more than the table, what raises or lowers it, how to measure it and when to consult.