When it comes to high-intensity moves, it's fair to say I have a love-hate relationship with them. I love the sweaty, endorphin-fuelled high that follows them, but actually doing the exercise? Not so ...

Mountaineers have tried to rationalize their obsession with scaling peaks for centuries. “What is above knows what is below but what is below does not know what is above,” wrote Rene Daumal. Anatoli ...