clinical medicine

  • What Your ‘Heart Rate Variability’ Says About Your Health

    What Your ‘Heart Rate Variability’ Says About Your Health

    One feature a number of fitness trackers offer is a metric called “heart rate variability,” or HRV, which is the interval of time between each heartbeat. But given that we tend to think of our hearts beating at a steady and predictable pace, the fact that the interval between each beat varies can be a…


  • How Contagious Is Delta, Really?

    How Contagious Is Delta, Really?

    Delta is more contagious than the original COVID-19 virus, and it’s even more contagious than the other variants of concern. That’s why the CDC in the US has recently recommended masking up in some situations even if you’re vaccinated — as many public health experts have been urging ever since Delta started spreading.