Short Wave The neuroscience of cracking under pressure
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Feb 18, 2026 
Vikram Chib, a biomedical engineer and neuroscientist at Johns Hopkins who studies rewards, motivation and performance. He breaks down brain differences between mental and physical fatigue. He explains how incentives can both boost effort and sometimes turn into loss anxiety that disrupts performance. He outlines brain circuits involved and offers reframing strategies to ease pressure.
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How The Brain Registers Fatigue
- Fatigue arises when brain areas that sense internal state interact with motivational circuits.
- That interaction signals that the body cannot produce more output, which causes shutdown.
Small Rewards Reduce Fatigue
- Small rewards can counteract effort costs and reduce feelings of fatigue.
- Boosting reward value motivates people to overcome tiredness and continue tasks.
Rewards Can Produce Superhuman Performance
- Olympic athletes sometimes break world records because the added reward pushes them beyond limits.
- That extra incentive may let them perform better than in routine events.