Dr. Andrew Huberman: How to Raise Your Pain Threshold

Pain is not just about signals from the skin; your brain’s expectations, anxiety levels, and prior experience heavily shape the final experience. Knowing a painful stimulus is coming 20–40 seconds in advance allows mental preparation that significantly reduces perceived pain, whereas warning only 2 seconds or as early as 2 minutes beforehand can actually increase pain by spiking anxiety and autonomic arousal.

Pain threshold is higher and resilience to pain better during daytime waking hours, and especially worse between about 2:00–5:00 a.m. on a standard circadian schedule. When possible, schedule painful procedures, intense training, or challenging interventions for the daytime rather than late-night or very early morning, when even mild stimuli can feel disproportionately painful.

Cold receptors respond to relative changes in temperature, not just absolute temperature. Entering cold water slowly creates many small relative drops that repeatedly trigger cold-pain signals, making it feel worse. Provided it’s medically safe, getting into cold water all at once, up to the neck, reduces the relative mismatch signals and is usually more tolerable than inching in or being half-in, half-out.

The construction worker and the nail-through-the-boot example shows that the brain can generate excruciating pain based purely on perception and belief, even without tissue damage. Conditions historically labeled as “syndromes” (e.g., fibromyalgia, chronic fatigue) are not “imaginary”; emerging science implicates specific mechanisms such as glial activation via Toll-like receptor 4, underscoring that all pain is neural and biologically real.

Low-dose naltrexone can reduce some forms of fibromyalgia-related whole-body pain by acting on Toll-like receptor 4 on glial cells. Acetyl-L-carnitine (1–3, sometimes 4 g/day orally) has evidence for reducing chronic and acute pain and may even support wound healing, likely via effects on cellular metabolism and neuroimmune interactions. These are tools to discuss with a medical professional, not self-prescribe.