Neuroscientist: The One Day Protocol that RESETS Circadian Rhythm (better sleep, jet lag, travel)

Thomas DeLauer swears by complete fasting on planes, regardless of flight duration, including transatlantic trips. He argues that eating on board adds digestive work and disrupts circadian signaling, while fasting resets the body’s clock. To make this sustainable, he loads up on starchy carbs and creatine before the flight (see separate pre-flight hydration protocol) to maintain hydration and energy. Upon arrival, he waits to eat at a time that matches the new time zone’s meal schedule — e.g., if he lands at noon in Munich, he waits until dinner. He says this single practice has eliminated most jet lag symptoms for him and allowed him to adapt within a couple of days.

This protocol is designed to counter the diuretic effect of fasting at altitude in a dry cabin. DeLauer explains that when insulin drops, the kidneys excrete more water and electrolytes; simply drinking water on the plane leads to frequent urination and net dehydration. By loading with carbs and creatine before the flight, he retains more fluid and electrolytes, allowing him to sip minimal water during the flight without needing to chug. He emphasizes that he hyperhydrates both before and after the flight, but limits in-flight intake to sips. He also speculates that the carbs may have a cortisol-modulating effect, keeping him calmer.

DeLauer contrasts this with common hotel-gym cardio. He used to do zone 2 runs but found they often crept into longer, more stressful sessions that taxed his respiratory system. After flights, the body is in a heightened sympathetic state, and any prolonged moderate activity can exacerbate that. A short, all-out effort (like bodyweight circuits, kettlebells, or dumbbell complexes) delivers a quick sympathetic spike followed by a robust parasympathetic rebound, aiding recovery and circadian reset. He pairs this with fasted state to further entrain the metabolism to the new time zone.

DeLauer travels with an inexpensive red light bulb or small panel. He focuses on eye exposure because the retina's intrinsically photosensitive retinal ganglion cells communicate directly with the suprachiasmatic nucleus (the master clock). By blasting the eyes with red light in the morning, he signals daytime to the brain, accelerating the shift. He notes that this can be combined with methylene blue, as both donate electrons at the same mitochondrial site, creating a synergistic effect on ATP production and cellular resilience. This is a low-cost intervention that does not require a high-end device.

DeLauer highlights the practical advantage: most hotel rooms have a bathtub, while few have saunas. Immersing the body up to the neck provides superior conductive heat transfer and still elicits many heat-shock responses. The resulting vasodilation improves circulation, and the glymphatic system is activated, which is thought to clear metabolites that accumulate during travel stress. Most importantly, exiting the bath causes a rapid drop in core temperature, a potent signal for sleep onset. He also mentions that being submerged in water might offer grounding benefits (though not through earth connection), perhaps via mineral content if using bath salts. This is a simple, zero-cost ritual that can dramatically improve sleep on the first night.

Dr. Scott Sher emphasizes that the cabin environment is a multi-stressor: low oxygen (14-16%), increased radiation, recirculated air with potential pathogens and jet fuel. Methylene blue, a century-old compound, cycles between oxidized and reduced forms within mitochondria, effectively acting as a backup electron carrier when oxygen is scarce. This sustains ATP production and reduces free radical generation. It also has direct anti-inflammatory and antimicrobial effects, making it a 'jack of all trades' for flyers. He notes that it pairs especially well with red light therapy (both donate electrons at the same mitochondrial site).

DeLauer discovered portable calf compression sleeves (available for ~$100 on Amazon) and says they significantly reduce the next-day stiffness he used to experience. The battery-powered units use air to sequentially squeeze the calves, similar to the medical-grade NormaTec systems. He wears them once comfortably seated and notes that the improved circulation also makes him feel less groggy upon landing. While he doesn't provide mechanism details, the principle is well-established: external compression increases interstitial pressure, driving fluid back into the venous system and lymphatic capillaries, reducing edema and pooling.

Dr. Sher explains that the fastest way to shift circadian rhythm is to provide the cortisol spike normally occurring in the morning. If you land in a place where it's 8 a.m. but your body thinks it's 8 p.m. (cortisol low), taking a small dose of hydrocortisone (the natural form of cortisol) tricks the brain into thinking it's morning. Over a few days, the dose is tapered, allowing the body to assume its own production. This is a strategy from anti-aging and sports medicine, used by some doctors for executives. DeLauer mentions he might use it if he can't exercise in the morning. Both emphasize that it's a prescription and not for everyone.

DeLauer argues that after landing, you should force yourself to stay awake until a reasonable local bedtime without pharmacological aid. Caffeine, being a diuretic and CNS stimulant, can fragment later sleep and prolong the adjustment. Instead, he advocates sheer willpower; then upon waking the next morning, having coffee or tea to deliberately spike cortisol, reinforcing the new morning signal. Dr. Sher agrees and adds that alcohol is even worse, as it disrupts sleep architecture and dehydrates.

Both speakers advocate grounding, citing studies on electrical grounding reducing inflammation and improving heart rate variability. DeLauer notes that he often trains barefoot and tries to get his feet on earth immediately after flying. The transcript mentions that grounding helps with 'force production' and 'energetic flow', though the scientific evidence is debated. Nonetheless, they insist there is legitimate science behind it, not just 'woo-woo'.

Dr. Sher explains that travel makes people sympathetically dominant due to stress, security, changes. Balancing sympathetic/parasympathetic tone is crucial, and enhancing the GABA system helps. He recommends simple extended exhalation breathing (nose breathing if possible) to stimulate the vagus nerve, and for those who need more support, GABAergic compounds or products like Tro Calm.

The expert explains that commercial aircraft cabins are pressurized to simulate 8,000 ft (6,000 ft on newer Dreamliners), cutting oxygen availability by nearly a third. This sudden hypoxia launches mitochondria into a shock state, compounded by radiation, proximity to other people's exhalations, and potential jet fuel fumes. Methylene blue acts as an electron cycling agent that can stand in for oxygen at complex IV of the mitochondrial electron transport chain. This not only sustains ATP production but also quenches reactive oxygen species, lowers inflammation, and provides antimicrobial action. The compound has a century of safe use at low doses, and its resurgence is fuelled by biohackers like RFK Jr. reportedly using it on flights. The expert considers it one of the most powerful tools he's recently adopted.

DeLauer argues that when you fast on a plane (which he recommends), insulin levels drop, leading to increased urine output and loss of electrolytes if you drink water. By pre-loading with carbohydrates (potatoes, starchy sources) and creatine before the flight, you create a hyperhydration reservoir: carbs bind water, and creatine draws water into cells. He limits in-flight fluid intake to sipping, avoiding the chug-and-pee cycle that depletes minerals. This strategy, he says, keeps him comfortable without the dehydration symptoms that often accompany long flights. He emphasizes he is metabolically healthy, so his approach may differ for others. He also notes that he hyperhydrates again after landing. The carb load may also have a cortisol-modulating effect, keeping him calmer.

DeLauer notes that even a gentle 60-minute run can become a long, prolonged stressor when the body is already taxed. Instead, he opts for a 15-20 minute session of high-exertion, low-respiratory activity like bodyweight or resistance training. This short burst produces beneficial hormonal shifts (BDNF) and improves parasympathetic/sympathetic balance without overloading the respiratory system or causing excessive cortisol. He performs it fasted before his first local meal to accelerate circadian alignment. Dr. Scott Sher supports this by noting that short exercise bouts help regulate the autonomic nervous system and that GABAergic support can further ease the transition.

DeLauer explains that hot water immersion up to the neck is actually superior to a sauna in terms of heat transfer, though it may not provide the cranial pressure some sauna enthusiasts seek. The heat stimulates the glymphatic system, which helps clear brain waste products, potentially enhancing sleep quality. After leaving the bath, core body temperature drops, which is a powerful signal for sleep onset. He adds that being in the bath also offers some degree of grounding (though this is more controversial). He recommends doing it soon after arriving, especially if a bathtub is available, as a way to reset both body and brain.

DeLauer uses portable compression boots (originally NormaTec but available as generic for ~$100) that pulse air around his calves. He puts them on after sitting down and finds they significantly reduce the stiffness he normally feels the next morning. The gentle pneumatic massage mimics muscle contractions, aiding lymphatic drainage and circulation. He admits they look unusual, but the payoff in post-flight mobility is worth it. Dr. Sher does not comment on this tool, but DeLauer's enthusiastic endorsement suggests it’s a practical hack for frequent flyers.