The Olympic Games push athletes to their physical limits, but what happens when the environment itself becomes a challenge? When the air is thin and every breath matters, how do Olympians prepare their bodies for the ultimate test?
It's not just about hitting the gym or logging miles. Some athletes have unique training methods, like using brine and seafoam to build fitness. But for those aiming for the Olympic podium, especially in the upcoming Milano Cortina 2026 Games, the journey often involves ascending to staggering heights.
Imagine competing at over 10,000 feet, where the air is so thin that simply breathing can be a workout for the unaccustomed. The venues at Milano Cortina 2026 showcase this dramatic altitude range. From the Tesero cross-country stadium at 830 meters (2,723 feet) to the breathtaking Vertigine downhill start at 2,380 meters (7,808 feet), athletes will navigate a vertical challenge like no other. And that's not all—lifts will soar to 3,244 meters (10,643 feet) atop the majestic Tofana peak in the Dolomites.
But here's where it gets fascinating: at these dizzying heights, the focus shifts from raw strength and speed to the intricate science of blood oxygen levels and cardiovascular performance. According to experts in extreme medicine from Northeastern University, the reduced oxygen at high altitudes demands a unique approach to sports medicine.
"The air is thinner, and each breath captures fewer oxygen molecules," explains Joshua Merson, an associate clinical professor and extreme medicine specialist. "The body's natural response is to breathe faster and deeper, and your heart races to deliver oxygen-rich blood." But this delicate balance can be disrupted if the ascent is too rapid, leading to potentially dangerous consequences.
And this is where it gets controversial: when the body is starved of oxygen, a condition known as hypoxia, it triggers an inflammatory response. This can wreak havoc on blood pressure regulation, causing fluid leakage, according to Merson. Hypoxia can swiftly escalate into altitude sickness, with symptoms like headaches, nausea, and fatigue—eerily similar to a hangover.
But wait, there's more: hypoxia isn't exclusive to high altitudes. "It can occur at sea level or in controlled environments," says Sarah Spelsberg, director of U.S. Operations at World Extreme Medicine. Long flights, intense training, heat stress, and illness can all temporarily reduce oxygen delivery to tissues. The body's response to hypoxia is a complex dance of increased heart rate, metabolic shifts, and prioritizing oxygen for vital organs.
Understanding hypoxia is a game-changer for athletes. It teaches them to pace themselves, recognize early signs of overexertion, and implement strategic recovery methods. "Hypoxia awareness is a secret weapon, helping athletes differentiate between beneficial stress and warning signs, ultimately reducing injuries and burnout," Spelsberg reveals.
So, how do medical professionals at these events identify when hypoxia is affecting athletes? "It's about observing subtle changes," Merson says. "An outgoing person may become quiet, or a skilled packer struggles with their equipment. Even a trained athlete might breathe heavily on flat ground." These cues, along with more apparent signs like stumbling, can indicate the onset of altitude sickness.
History provides cautionary tales, like the 1968 Mexico City Olympics at 2,250 meters (7,382 feet). Australian runner Ron Clarke fainted after the 10,000-meter race, and U.S. swimmer Suzy Jones, who trained in Colorado Springs, experienced altitude sickness that impacted her performance.
But here's a twist: being in peak physical condition doesn't guarantee immunity from altitude sickness, and genetics may also influence susceptibility. Moreover, not all mountains are created equal. New England's highest peaks, like Mount Washington, rarely reach altitudes that induce severe stress, while Colorado's training venues often exceed 10,000 feet, pushing athletes closer to the threshold where thin air becomes a performance-altering factor.
As the Olympic flame ignites in Milano Cortina, the world will witness athletes pushing the boundaries of human capability. But behind the scenes, a silent battle against the elements will be fought, where every breath and every heartbeat matter.
