Recently added
3 articles
HRV is not a score, it is a question
Heart rate variability moves for a dozen reasons at once. Here is how to read the trend instead of chasing the number your watch showed this morning.
Your last coffee is still in your blood at bedtime
Caffeine has a half life of roughly five to six hours. Run the arithmetic on a 4pm espresso and the result is uncomfortable.
Population studies cannot tell you what works for you
A trial reports the average response. You are not the average. The fix is an n of 1 experiment, and it is simpler to run than it sounds.