This is the fittest human on the planet - Can I keep up for 24h?

Imagine running uphill for 20 min. at over 2k meters and having a heart rate of 125. 😂 That is certifiably ludicrous.

A rest day with a 15km run and 4km swim 😂

I'm a triathlete and have ran a 2:40 marathon. The crazy thing is if I swapped place with Magnus this video would turn out exactly the same. I wouldn't be able to keep up with Kristian for 50m of a swim and I'd be dropped on the climb. 27k run up that climb is insane. Most people don't realise how good elite endurance athletes are because walking around they look like normal people. But hidden underneath their normal look is a superhuman.

I mean Magnus’s heart rate being at 179 should tell you how insanely tough that run was. The man is fit. The fact Kristian’s was at 125 is NUTS.

magnus: 179 bpm kristian: 125 bpm dude is still in his zone 1 pace! crazy!

125 HR up that hill OMG. Dude still casually talking not even in Zone 2 lol

I've seen alot of Magnus' videos. Magnus is a BEAST when he's compared to "normal" people. To see him humbled like this is insane, Kristian must be superhuman.

I respect that this guy clearly isn't super psyched about being on camera, and being in the spotlight for interviewing, but he still gives his best and helps Magnus create a great video. There's so much pressure put on athletes to be balls of charisma, and that isn't always conducive with the attitude it takes to put in 1000s of solo hours training.

This guy needs more recognition.

Magnus: "You may not like it but this is what peak performance looks like"

To be able to say you can take a nap and still beat David Goggings without even bragging because it is just facts is so funny to me.

"look how light this bike is" Guy whose arm strength impressed Eddie Hall lifts bike Well I've learned nothing from this demonstration

Its crazy that if you saw Kristian on the street you wouldn't think he's an athlete. Our perception of being fit is very flawed

For the record, 11:21 is an incredible Ironman time. But the difference between "incredible" and "best in the world" is massive. It's like the difference between a 3:00 and 2:05 marathon.

I remember Magnus doing one of the military tests where he crushed the uphill run with weight on, he is amazingly fit aerobically and here you can see that this guy is completely on another level, so inspiring!!!!!!!! We need more of this!!! Magnus - just an idea, go and do a training session with marathon runners in Kenya or Ethiopia, you can take them climbing afterwards :D

I'm sorry to hear that the running videos aren't doing as well for you because, as a person with very low stamina, I have so much respect and admiration for the suffering you endure in these. Also the footage is just SO GOOD! Beautiful.

Magnus always educating us. One of the best aspects of watching Magnus is he helps me be open to new challenges - even if not at his level.

What an amazing collaboration, really enjoying the diverse content! Also MoreMagnus channel with your more ‘traditional’ climbing videos are great🙌 still voting for that Janja Garnbret colab!

I would like to push back a bit on this "natural ability stuff" that I see a lot of. Norway was not Triathlon nation but then the team you see here started an incredibly data driven program that resulted in not one, but two unrelated Ironman World Champions popping out of the same little town (ref: at 270k population it would be the 83rd biggest city in the US): Kristian Blumenfelt and Gustav Iden. Like the odds of that being a coincidence are astronomical. That indicates that it was not just down to randomly stumbling on a generational talent with unique genetic advantages, but that the extremely scientific approach they took combined with athletic individuals who were willing to make this project their entire lives is what allowed them to basically outperform the entire established Ironman elite. It's very fascinating cause it's obviously not like triathletes weren't training hard before, but there were these established ideas of how much was too much and that your body would tell you when you were approaching those limits. And it turned out that some of those signals like feeling completely exhausted, tired and demotivated sometimes don't accurately reflect what's actually going on in the body. So they started doing extremely frequent tests like seen in the pool here, that way when an athlete says "I'm on the limit right now" they could either say; "actually you're not it just feels that way, you've pushed harder before" or "yes you actually are, and this it what that actually feels like" and work from there. And funnily it kinda comes back to the David Goggins/Navy seal 40% idea of "when you're entire body tells you it's time to quit, you're only about 40% of the way to your actual physical limit". However they took this general mental concept, heightened it with frequent scientific testing and applied it to sport specifics and that has allowed the Norwegians to perform previously unheard of training volumes. As an amateur Ironman myself it's been incredibly cool to see the established "rules" of training change so rapidly, now I just need a personal scientist and data analyst so I can implement it myself!

When magnus complains about things being tough you know they are brutal. He has such a high threshold.