Trigger a release of adrenaline through cold exposure (such as a cold shower) immediately after a learning session to stimulate long-term memory.

noli's read

The idea of stimulating memory consolidation through post-learning physical stress is grounded in solid scientific evidence. Pioneering neurobiological work by James L. McGaugh (expert opinion and neurobiological studies) has established that the release of stress hormones like adrenaline immediately following a task facilitates the anchoring of memories. In humans, randomized controlled trials (such as Cahill and Alkire in 2003) using the 'Cold Pressor Stress' protocol (immersion of a limb in ice water) confirm that this acute post-learning stress improves information retention. However, this same study shows that the memory gain primarily concerns elements with an arousal or emotional load, and much less so for neutral facts. Furthermore, the use of a full cold shower at home as a study tool has not been formally validated by clinical studies on academic learning. Extrapolating the laboratory protocol in this way is a promising biological hypothesis, but it simplifies a mechanism that is highly dependent on the type of information to be retained.

the sources

1. 1NIH Office of Dietary Supplements 2026
2. 2Manson JE et al. 2019
3. 3Bhatt DL et al. 2019
4. 4Khan SU, Lone AN, Khan MS, et al. 2021
5. 5Liao Y, Xie B, Zhang H, et al. 2019
6. 6hubermanprotocols.com (fan reference guide)