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THE THINKING BEHIND IT

Useful science.
In real life.

A research finding is a starting point. We use it to suggest a practical choice, then learn whether that choice helps you.

These notes link to the original work and explain its limits. Your coach can talk through how a finding relates to the topic you're discussing.

RESEARCH NOTE · 2026-10-18

Make one decision earlier

A meta-analysis found modest average benefits from implementation intentions, with different effects for adding helpful eating behaviours and reducing unwanted behaviours.

What we take from it

Choose one concrete cue and action, then test whether it makes your difficult moment easier.

Who was studied—and what this cannot tell us

Studies of eating behaviour across varied populations.

This does not prove our particular tactic will work for you or guarantee a weight change.

Read the source: Carrero, Vilà and Redondo, Appetite, 2019

Next editorial review: 2027-01-18.

RESEARCH NOTE · 2026-10-18

A broken night changes the decision

The systematic review and meta-analysis found worse exercise performance on average after sleep loss, with substantial variation between studies.

What we take from it

Use how you feel, the actual session and your available time to discuss a suitable option.

Who was studied—and what this cannot tell us

Controlled studies of acute sleep loss and exercise performance.

A sleep reading cannot specify your safe lifting load, predict your race result, or decide that you must cancel a session.

Read the source: Craven et al., Sports Medicine, 2022

Next editorial review: 2027-01-18.

RESEARCH NOTE · 2026-10-18

Food can feel harder after short nights

Participants assigned to a sleep-extension intervention had lower average energy intake than controls during the trial.

What we take from it

Treat sleep as relevant context and make satisfying food easier to access when capacity is low.

Who was studied—and what this cannot tell us

80 adults with overweight and habitual short sleep in a two-week trial.

This does not establish why any individual eats more, prescribe an extra calorie allowance, or make more sleep available to a parent.

Read the source: Tasali et al., JAMA Internal Medicine, 2022

Next editorial review: 2027-01-18.