PEAK PERFORMANCEWeeks to result

Fasted vs. Fed Training

To eat or not to eat

Problem it solves

Fasted vs. Fed Training solves the gap between potential and actual performance by providing a structured approach to measuring, improving, and sustaining high output.

Best for

Individuals who want to optimize their training routine

Not ideal for

Those who have specific dietary needs or restrictions

Overview

Why this framework exists

The decision to train fasted or fed should be based on personal preference. Research shows that the muscle growth and fat loss adaptations to exercise are the same in men and women, regardless of whether they train fasted or fed. However, it's essential to consider individual factors such as hunger, energy levels, and digestive issues when making this decision.

Core principles

3 total
  1. The decision to train fasted or fed should be based on personal preference.
  2. Research shows that the muscle growth and fat loss adaptations to exercise are the same in men and women, regardless of whether they train fasted or fed.
  3. Individual factors such as hunger, energy levels, and digestive issues should be considered when making this decision.

Steps

2 steps
  1. Determine Your Personal Preference
    Consider your individual factors such as hunger, energy levels, and digestive issues to decide whether to train fasted or fed.
    Pro tipExperiment with both fasted and fed training to see what works best for you.
    WarningBe mindful of your body's response to training fasted or fed, and adjust your approach as needed.
  2. Consider Your Training Goals
    Think about your training goals and how they may impact your decision to train fasted or fed. For example, if you're trying to improve endurance, you may want to train fed to ensure you have enough energy.
    Pro tipMake sure to fuel your body appropriately for your training goals.
    WarningDon't neglect your nutrition needs, regardless of whether you train fasted or fed.

Checklist

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Examples

2 cases
Fasted Training for Weight Loss

Some individuals may find that training fasted helps them lose weight, as it can increase fat oxidation and improve insulin sensitivity.

OutcomeImproved weight loss and body composition.
Fed Training for Endurance

Others may find that training fed helps them perform better during endurance activities, as it provides a readily available source of energy.

OutcomeImproved endurance performance and reduced fatigue.

Common mistakes

2 traps
Not Considering Individual Factors
Failing to consider individual factors such as hunger, energy levels, and digestive issues can lead to poor performance or discomfort during training.
Not Experimenting with Different Approaches
Not trying out both fasted and fed training can limit your understanding of what works best for your body.

Origin story

How this framework came to be

The debate about fasted vs. fed training has been ongoing in the fitness community. Some argue that training fasted can improve fat loss, while others claim that eating before training can enhance performance. However, the scientific evidence suggests that the decision to train fasted or fed should be based on personal preference and individual factors.

Source

Traced to primary
Source · PODCAST
The Most Effective Weight Training, Cardio & Nutrition for Women | Dr. Lauren Colenso-Semple
Andrew Huberman · 2026
Open source →