Jack Dorsey, the CEO of Twitter, shared a look at his heart rate after a day of back-to-back Congressional hearings.

The 41-year-old CEO, who fasts everyday, has an impressively low resting heart rate.

But the stress of getting grilled by lawmakers for hours and being accosted by the conspiracy theorist Alex Jones was apparently enough to set his heart rate soaring to unusual levels on Wednesday.



There's a reason why they call it the hot seat.

Twitter CEO Jack Dorsey may have appeared calm and collected on the outside during several hours of testimony during back-to-back congressional hearings on Wednesday. But one look at his Apple Watch makes clear that he was actually quite stressed.

Dorsey shared a screenshot on Twitter of his Apple Heart app, which tracked his heart rate through his Apple Watch throughout his busy day on Capitol Hill.

As you can see from Dorsey's tweet below, the 41-year old's heart rate spiked to 109 beats per minute during the time he was at the hearings.

And who can blame him?

After all, Dorsey was in the line of fire for several hours responding to Republican allegations that Twitter — the social media platform of choice for President Donald Trump — is censoring conservative voices, witnessing loud protests from both sides of the political spectrum and even getting accosted by agitated conspiracy theorist Alex Jones.

Perhaps just as interesting was Dorsey's impressive resting heart rate of 44 beats per minute.

Dorsey, who fasts all day until dinner, falls far below the normal heart rate. The average resting heart rate for a male is between 60 to 100 beats per minute, according to the Mayo Clinic.

Dorsey's low heart rate is more aligned with well-trained athletes, whose heartrates can sometimes go as low as 40 beats per minute.