When the body faces pressure, the signals are almost always the same: Elevated heart rate, quicker breathing, higher cortisol. In laboratory studies, participants showing these responses performed very differently depending on how they understood them. Those who saw the signals as threat became less accurate and more anxious. Those who saw them as preparation showed better focus, faster recovery, and higher confidence. Psychologists call this the challenge vs. threat response.

This doesn’t make stress harmless - chronic overload still damages health. But it shows that, in short bursts, pressure can be used as fuel if we learn to interpret the signals differently. High performers often train this ability: Before an event, they re-label the pounding heart as readiness, not danger.

In the Masterclass you’ll find tools from freedivers, sailors, and explorers who apply this science in extreme conditions, and break it down into practices you can use in daily life.

Jill Heinerth - Cave Diver