Mechanism walks
Walk a mechanism, not a feed.
These are not articles. Each walk is a handful of stations already on the atlas, in an order that tells one so-that's-why. The camera only moves if you ask it to. Chat stays where it is — ask any stop along the way.
01 · Nutrition
How vitamin D walks calcium into bone
Skin, liver, kidney, then K2 steering calcium into bone.
02 · Nutrition
How iron gets in, and how vitamin C helps
The gut door is picky. Vitamin C reduces ferric iron so more of it gets through.
03 · Nutrition
K2 steers calcium into bone, not artery
Calcium circulates. K2-activated proteins decide bone or vessel wall.
04 · Nutrition
Magnesium: enzyme partner, muscle-relax switch
ATP is only usable when it is bound to magnesium. Enzymes and muscle both feel the gap.
05 · Nutrition
How creatine parks energy inside muscle
The first seconds of a sprint are not new sugar. Phosphocreatine hands the phosphate back.
06 · Nutrition
Sodium and potassium facing off across the membrane
The pump throws sodium out and invites potassium in. Blood pressure starts at that gradient.
07 · Nutrition
Omega-3 and omega-6 share one enzyme
Two essential fats share one desaturase. Whoever arrives first changes the downstream signal.
08 · Nutrition
How GLP-1 makes you not want another bite
Not willpower. The ileum tastes food, slows emptying, and tells the brain that is enough.
09 · Body
What the body repairs in deep sleep
N3 is not just 'sleeping deeply'. Growth hormone, brain clearance, next-day pain all sit here.
10 · Body
How morning light sets the clock
A retinal cell that is not for seeing tells the SCN that day has started.
11 · Body
How muscle grows along the mTOR road
Tension, amino acids, energy status meet in the cell. Soreness is not the signal.
12 · Food
Who competes with whom in the same meal
Tea, calcium and phytate all narrow iron's door. Not poison — timing.