CIRCADIAN
~1.5h
Per day of westward adaptation. Eastward roughly 1h. The suprachiasmatic nucleus shifts at its own rate.
Travel Pack
Regulate the day. Recover the night. The full 24.
Regular price
€52,95
Trusted by the BWT Alpine Formula One Team
RISE
FLOW
PRE-SLEEP
The full HMN24 system, in the format that fits hand luggage and the demands of how travel actually works on the body. Four days of complete coverage, sixteen single-serve sachets.
Time-zone displacement
Cabin physiology
TSA-compliant
Informed Sport
Informed Sport
Vegan
Free UK Shipping
Not sure where to start? Take the 2-minute diagnostic and we'll tell you whether the full system is right or whether one product is enough for now. Take the diagnostic →
Travel Pack
02 · THE BIOLOGY OF FLIGHT
Time zones don't move at human speed
The body adapts to a new time zone at roughly 1 hour per day eastward, 1.5 hours per day westward. The cabin compounds the load: low humidity, mild hypoxia, prolonged sitting, sustained noise. Travel Pack is built for the conditions, not the destination.
HYDRATION
10–20%
Cabin humidity vs 40–50% in buildings. Insensible fluid loss adds ~150ml over an 8-hour flight.
HYPOXIA
5–8k ft
Cabin-altitude equivalent. SpO₂ drops to ~90% in healthy travellers. Cognitive load rises.
SLEEP
75dB+
Sustained cabin noise. Architecture fragments. Recovery on arrival is the limiting factor.
Sources: CDC Yellow Book (2025); Muhm et al., NEJM (2007); UK CAA Physiology of Flight; Bagshaw, The Aircraft Cabin Environment (2019).
03 · THE FOUR-DAY PROTOCOL
Closing the gap between body and destination
Your circadian clock can only shift roughly 1–1.5 hours per day on its own. Each sachet is positioned to anchor a moment of the destination day — pulling your body's rhythm into alignment, one day at a time.
Destination clock (fixed)
Your body's clock
PRE-FLIGHT
DAY 0
ARRIVAL
DAY 1
ADAPT
DAY 2
ADAPT
DAY 3
ALIGNED
DAY 4
What pulls the body line down each day
Day 0 · Travel day
HYDRATE ×3–4FLOW
Cabin physiology only. The displacement happens here — protocol holds the body steady through the transit.
Day 1 · Arrival
RISEFLOWPRE-SLEEP
Maximum gap. RISE anchors morning, PRE-SLEEP anchors evening — pulling body clock toward destination at both ends.
Days 2–3 · Adapt
RISEFLOWPRE-SLEEP
Body shifts ~1–1.5h closer each day. The system holds the new anchors steady while biology catches up.
Day 4 · Aligned
RISEPRE-SLEEP
Body and destination clocks aligned. Maintenance dose — keeping the rhythm locked in for the rest of the trip.
8h displacement → aligned in 4 days. Without intervention: 5–7 days.
Conditions, not the clock
04 · WHAT'S IN THE PACK
Sixteen sachets, four products, four days
RISE
×4Arrival-morning alertness, anchored to destination wake.
12.5g · Caffeine + theanine 1:2 · Citicoline · B-complex 100% NRV
FLOW
×4Daytime cognitive support without compounding caffeine load.
7.5g · Lion's mane · NALT · Rhodiola · Vitamin C 94% NRV
HYDRATE
×4For the dry-cabin physiology and post-flight rebalance.
Sodium 1000mg · Potassium 200mg · Magnesium 60mg
PRE-SLEEP
×4Sleep onset support shifted to destination time.
PS 400mg · KSM-66 400mg · Magnesium glycinate · L-theanine
05 · BUILT FOR THESE JOURNEYS
Eastward, westward, multi-stop
EASTWARD · THE HARDER DIRECTION
London → Singapore, Tokyo, Sydney
Adaptation runs at ~1 hour per day eastward. Pre-flight light planning, in-flight HYDRATE every four hours, PRE-SLEEP from arrival night onward.
WESTWARD · THE EASIER DIRECTION
London → New York, LA, San Francisco
Adaptation runs at ~1.5 hours per day westward. RISE on arrival morning with first light. FLOW through the working afternoon. PRE-SLEEP at local bedtime.
MULTI-STOP · THE EXECUTIVE ITINERARY
Three cities in five days
Pack two if the trip exceeds four full days at destination. The four-day protocol resets cleanly with each new arrival window.
06 · Honest answers
The questions everyone asks first
Will this fix my jet lag?
No supplement fixes jet lag; it's a phase-shift problem driven by light, sleep timing and behaviour. Travel Pack is designed for travel conditions and the demands of time-zone displacement. The protocol does most of the work; the formulations support it.
Why no melatonin?
Melatonin is regulated as a prescription medicine in the UK. Travel Pack is built around the system that supports the body's own evening melatonin onset, phosphatidylserine, KSM-66, magnesium glycinate, and L-theanine, without supplementing the hormone directly.
Is it cabin-crew safe / TSA compliant?
All sachets are powder or capsule. Each individually under the 100ml liquid rule. Informed Sport batch tested for athletes and any role with banned-substance screening.
When should HYDRATE actually be used in flight?
Cabin humidity sits at 10–20%. Insensible fluid loss adds roughly 150ml over an 8-hour flight. One serving 60–90 min before boarding, then one every four hours of cruise, then one on landing. Three of the four sachets are in-flight.
What if my trip is longer than four days?
Pack two. The first covers arrival and the first 72-hour window where adaptation is most disrupted. The second covers the back end of a longer trip and the journey home.
Is this the same as the Circadian Modulation Pack?
No, different format, different purpose. Travel Pack is single-serve sachets for portability and protocol use. The 30-day system pack is for daily home use and full-month coverage.
Not sure where to start? Take the 2-minute diagnostic and we'll tell you whether the full system is right or whether one product is enough for now. Take the diagnostic →
