Metabolic Mastery Week 2 — Fats
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Week 2 of 12  ·  Metabolic Mastery

Fats: the essential macro.

Protein gave you a floor. Now add the macro your cells are built from.

This week you learn which fats build the system, which ones distort it, and how to make one deliberate swap.

Reflection on Week 1

Before we add anything new, answer these honestly:

Did you hit your protein target on most days last week?

Did you notice where your protein was lowest — breakfast, lunch, or dinner?

Did you weigh at least one protein source raw before cooking?

You'll carry this into this week's decision.

Sort it yourself

Drag each fat into the right bucket. Where you hesitate is where the learning is.

Week 2 Tool
Fat sorter
Interactive

Drag each fat into the right bucket. On mobile, tap a fat then tap a bucket.

Drag into a bucket ↓
🔥 High heat
🫒 Lower heat / cold
🐟 Eat as food
🚫 Avoid
Score: 0/12
Drag a fat into a bucket to begin
The science
🧱
Builds structure
Every cell membrane is built from fat. Fat quality becomes cell quality.

Upgrade the input, upgrade the system.
⚗️
Builds hormones
Steroid hormones depend on dietary fat. Too little fat, or poor-quality fat, changes the signal.

Hormones run on fat. Quality matters.
🛰
Sends signals
Fats don't just fuel cells. They tell cells when to stop eating.

Quality determines whether the signal lands.
Saturated fats — Stable, structural
Stable at heat
Supports cell membranes and hormone production.
Butter Ghee Beef tallow Coconut oil
Monounsaturated fats — Stable, useful
Good default fat
Best at lower heat or cold use.
Olive oil Avocado oil Macadamia
Whole-food omega-3 — Protective
Best from real food
Helps balance inflammation.
Salmon Sardines Walnuts Flaxseed
Industrial seed oils — Unstable, inflammatory
Extracted, oxidized
Extracted, easy to oxidize, and easy to build into the system. Found in packaged food and restaurant kitchens.
Canola Soybean Corn oil Sunflower
Fat quality is not a detail. Your cells are built from it.

Fats don't just feed cells. They tell cells when to stop.

Saturated fats burn in a way that produces a strong "full" signal at the mitochondria. Polyunsaturated fats — the kind concentrated in seed oils — produce a much weaker one.

When the signal is weak, the cell keeps taking in fuel. Storage keeps growing. Hunger keeps returning.

This isn't about one meal. It's about the fat your cells are built from, and the signal those cells can produce.

The exposure adds up fast. Packaged food, dressings, sauces, and restaurant meals are mostly seed oil.

Cellular satiety runs on fat quality. The wrong fat dulls the signal.

High heat — tallow, ghee, grass-fed butter, refined coconut oil

Lower heat / cold use — olive oil, avocado oil

Eat as food — salmon, sardines, eggs, nuts

Avoid — canola, soybean, corn, sunflower, safflower, margarine

If it smokes, it's breaking down. Lower the heat or change the fat.
This week's challenge
Week 2 Challenge
One change. Seven days.

Protein target holds.

No seed oils.

Swap the oil you cook with. Then check ingredient labels on one packaged food, one sauce, and one restaurant meal if you can.

Hold the change for the week. Report what you found.

Hollis
Hollis Molloy
"Most people think fat is just calories. It is not. It becomes part of you. Change the fat, and you change the signal."
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