How is this even possible?

[The Oracle]

https://twitter.com/i/web/status/1585334829536935941

That's some strength...

 

[Jubee]

Impressive, no doubt.
How about Alex Honnold, he climbed over 7,500 feet with no equipment and just a chalk bag.
1:00

 

[silentkisser]

Impressive, no doubt.
How about Alex Honnold, he climbed over 7,500 feet with no equipment and just a chalk bag.
1:00

I watched Free Solo and it was nerve-racking. I honestly wonder if these dudes have a death wish... But the level of grip strength and endurance they have is off the charts.

 

[Sonic Temple]

Incredible strength and concentration - that is some serious mental strength let alone physical.

 

[jsanchez]

https://twitter.com/i/web/status/1585334829536935941

That's some strength...

Upper body strength. Zero body fat helps too.

 

[barnacler]

Forearms are as wide as his biceps.

 

[anon1]

He was bitten by a radioactive spider.

 

[Jubee]

This one gets your ass clenched watching how casually Alex and Magnus are talking to each other climbing up, with no ropes of course.

 

[Jubee]

Incredible strength and concentration - that is some serious mental strength let alone physical.

That's what impresses me the most, the mental strength, don't look down, don't worry, "one move at a time, this move is easy, this move is easy", it's incredible.
6:32 in above video.

Look at 7:43 as well, that's about 3 stories and on what looks to be a literal 90° angle, absolutely casual.