Creatine Monohydrate.

Why this matters

Most people associate creatine
with sport. Its most relevant role for many people is in the brain.

The brain uses energy
continuously. During demanding cognitive work, that demand increases significantly. When the energy supply drops, thinking slows and decisions become harder.

What happens in the body

Cells run on ATP, the body's primary energy molecule. When ATP is used, it must be regenerated quickly. Phosphocreatine stored in muscle and brain tissue is what makes that regeneration fast.

Daily creatine supplementation increases phosphocreatine stores in neural tissue.
This extends how long the brain can sustain high output before performance starts to drop. Research shows creatine supports cognitive performance under sleep deprivation and sustained mental load, both common in demanding work and travel schedules.

When this becomes relevant

Long-haul flights with limited food. Long working days with coffee as the primary fluid. Physical shifts where sweat loss and missed meals both build across the hours.