nature an experiment

I don't know yet why is it like so far like it sounds so simple they had no idea but now the data's

I find this not only refreshing but but at some level astounding nature nature.

Welcome back to the nature podcast.

This week, how your smartphone's camera could measure your heart rate and testing Richard Feynman's solution to the restaurant dilemma problem.

I'm Benjamin Thompson.

First up on the show this week, reporter Julie Gould has been finding out about a way that a person's

mobile phone could be used to quickly and unobtrusively measure their heart rate.

Resting heart rate, literally the number of times someone's heart beats in a minute while at rest,

is a pretty simple number to calculate, but it carries a lot of information about a person's cardiovascular health.

A declining resting heart rate over time can signal

improving fitness, but a consistently elevated resting heart rate can be associated with cardiovascular

disease, diabetes and even early mortality. So, knowing if this rate is increasing, can be useful.

Having the ability to be notified if you see trends are different, your resting heart rate is increasing, can be useful. Having the ability to be notified if you see trends are

different, your heart rate, wrestling heart rate is different, has been increasing over the last

couple months. That could trigger some further investigations as the why. Is it spelled up or

is it something else going on in your health? This is Ming Zerpo, a staff research scientist at Google.

His goal is to simplify taking these measurements so that these warning signals can be picked up

faster and, if need be, treated sooner.

But clinical measurements of these numbers can be time-consuming.

It requires dedicated time and effort to go to the doctor or to take a few

minutes out of your day to rest, measure and make a note of it. There are devices already out there

...