Safe ways to spike adrenaline?

Deliberate cold exposure, such as cold showers or ice baths, can safely increase adrenaline levels as discussed by Andrew Huberman. This method has been identified as a tool to accelerate recovery from hangovers, enhance learning and memory, and improve concentration and focus. Immersing in cold water is shown to cause a sharp increase in both adrenaline and dopamine levels and is generally safe if done properly 1 2 3.

Additionally, physical activities that increase physical exertion can also safely spike adrenaline levels. Engaging in exercise, particularly types that challenge your capacity and force you to push through effort, can result in an adrenaline spike. This includes cardiovascular exercise, yoga, resistance training, or just getting active in general 4 5.

Cyclic hyperventilation, which includes breathing techniques like Wim Hof or Tummo, also increases energy and alertness by raising epinephrine and adrenaline release. This practice is known to be effective and can be used by most people to increase alertness and energy 6.

However, it is crucial to follow proper protocols and use caution, especially for activities that carry inherent risks or in cases where individuals have pre-existing health conditions or are sensitive to the effects of adrenaline 3 6.