Caffeine is a legal performance tool and a jitter factory depending on dose, timing, and your baseline anxiety. A bungee morning already schedules its own stimulant delivery: adrenaline. Stacking a triple espresso on top of that without a plan is how steady people invent a tremor.[1][3]
What caffeine actually does for you
In moderate amounts, caffeine can increase alertness and perceived energy. For habitual coffee drinkers, a normal cup may simply prevent withdrawal headache - which matters more than any “boost.” For rare users, the same cup can feel like stage fright with a lid.[1][2]
The adrenaline overlap
Anticipation raises heart rate and sharpening sensations on its own. Caffeine can amplify those signals. If your fear already shows up as racing pulse, extra stimulation may make the queue harder even if freefall itself is fine. If you are calm-to-flat in the morning, a small familiar dose may help you feel present for briefings.[3][4]
Practical rules that work in the field
Stick to your normal morning amount - do not “go big for courage.” Finish coffee early enough that you are not desperate for a bathroom mid-harness. Skip energy drinks with mystery blends. Never use caffeine to compensate for a ruined night of sleep; it papers over fatigue poorly when coordination and judgment still matter.[2][4]
Who should be extra cautious
People with anxiety disorders, arrhythmia histories, pregnancy (who should not be jumping anyway under standard policies), or instructions from a clinician to limit stimulants should treat jump morning as a low-caffeine day. When in doubt, half-caf or tea is a kinder experiment than a double shot you do not usually drink.[2]
Helpful boost or jitters trap is personal. Run the experiment on a normal day first if you are unsure. On the platform, you want your own mind - caffeinated just enough to be awake, not enough to narrate catastrophe at 2x speed.[1][3]
Sources
- Harvard T.H. Chan - caffeine research overview (2025)
- Mayo Clinic - caffeine: how much is too much (2025)
- Medical News Today - adrenaline and arousal (2021)
- AJ Hackett Bungy NZ - preparing for your jump (2026)
Image credits
- Photo: Marc-Lautenbacher / Wikimedia Commons (CC BY-SA 4.0)
- Photo: Shixart1985 / Wikimedia Commons (CC BY 2.0)