What is the hardest form of cardio that you've....

Ever done? And what made it so much harder than the rest?

Insanity. But that's because it's all about how hard you push yourself. Phone Post

R0CK0 - swimming in the ocean against the current, close second are a bunch of water treading kinesthetics that stuff kills <img src="/images/phone/post_tag.png" alt="Phone Post" border="0" style="vertical-align:middle;"/>


Ya. Underwater carrying rocks even better. Thats real cardio.

I've been running hills. Prob not the hardest but it kicks my ass lol Phone Post

FortyKoatz - 
R0CK0 - swimming in the ocean against the current, close second are a bunch of water treading kinesthetics that stuff kills <img src="/images/phone/post_tag.png" alt="Phone Post" border="0" style="vertical-align:middle;"/>


Ya. Underwater carrying rocks even better. Thats real cardio.

Pure anaerobic brah.

Treading water with hands above my head, wearing twin 80 scuba tanks, 12 lb. weight belt, and fins.

UG posting

/thread

Full body , heavy, power lifts w/ kettebells...VERY anaerobic



High intensity intervals


Just hard sparring in the ring, mostly in the beginning, where I wasn't pacing myself

Crossfit Phone Post

@ Lord - Agreed.

We did around 45 minutes of groundwork this one session at our Judo club before and we the remaining 15 minutes was spent stadning (Randori).

I was EXHAUSTED.

Physically and mentally i was drained.

1- at the Muay thai school I go to, one day in clinch class, the instructor had us clinch and knee for the entire hour. Only break was to switch partners.
2- tabatas on a treadmill 10 minutes with the speed set to 13.5 Phone Post

A 12 mile run in a 50 lb weight vest when hungry and I had a cold, in the month of August. Not the best idea I ever had.

plyometrics.

Traditionalist - A 12 mile run in a 50 lb weight vest when hungry and I had a cold, in the month of August. Not the best idea I ever had.


Lol!

Obviously.

Your mom.....


sorry, had to be said

Backcountry uphill skiing at altitude-  heavy skis and boots through deep snow with thin air=hard work for lungs and heart



rowing machine/rowing at max effort-  works all major muscle groups



cycling uphill- the cardio required to cycle up a moutain is literally off the charts, there is a reason why 20% of the worlds best cyclists don't finish the tour d' france every year, and it's not just injures




I rode a bicycle 114 miles in one day. It was a mostly flat course but still, it will get your attention for sure. I agree with the cycling uphill comments.

croy_00 - Insanity. But that's because it's all about how hard you push yourself.

another vote for beachbody: Insanity

Running in the dunes, hills and sand are a good combo.

got a rock quarry near my house. Running one of those hills is exhausting. loose footing, & snakes. I can't even call it running.. more like fast climbing.