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Longevity Practice

What knowledge workers get wrong about training

The cardio-versus-strength false dichotomy and the minimum effective dose

For people whose job involves sitting and thinking, exercise tends to be approached as an aesthetic project or a discharge of accumulated stress. Neither lens captures what the evidence suggests should actually be on the calendar.

#exercise #zone-2 #deep-work #vo2-max #hormesis

By Mick

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Energy & Recovery

Stress isn't the enemy — chronicity is

The hormesis curve and why acute and chronic stress look identical at the cellular level

A hard workout, a cold plunge, and a difficult problem trigger almost the same physiological response as chronic financial worry. What separates beneficial from damaging is not the magnitude of the stressor but its duration and the recovery that follows it.

#stress #hormesis #recovery #hrv #neuroscience #sleep

By Mick

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Energy & Recovery

Sleep is upstream of almost everything

What the evidence supports, what it doesn't, and where the popular discourse has run ahead of the science

The case for treating sleep as a foundational lever is one of the strongest signals in physiology. The case for tracking your REM percentages on a wrist device is considerably weaker. The distinction matters.

#sleep #recovery #circadian #flow #neuroscience #hrv #caffeine #light

By Mick

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Flow & Focus

Flow isn't what you think it is

The state the literature describes, and the one the marketing sells

Csikszentmihalyi's original research describes a psychological state with reasonable scientific support. The popular literature has converted that descriptive finding into a prescriptive performance hack. The distance between the two matters.

#flow #deep-work #neuroscience #evidence

By Mick

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Flow & Focus

Single-tasking, attention residue, and the cost of switching

What the task-switching literature actually shows

The popular framing of multitasking as a moral failure misses what the research describes: the brain does not multitask, it switches between tasks, and the cost of switching is larger and more invisible than the people incurring it typically realise.

#deep-work #focus #attention #evidence #neuroscience

By Mick

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