Training Journal
The thinking behind the numbers.
VERTEX tracks what you lift. These articles explain what to do with it: how progressive overload actually works, what an estimated 1RM is telling you, and how to keep making progress when the bar stops moving.
What your estimated 1RM is actually telling you
Your e1RM is not a prediction of what you'd lift on a max attempt. Here is what the number really measures, and how to read it properly.
Eat protein the smart way
Two questions decide almost everything about protein: how much per day, and whether your body can use a big hit in one meal. The science has clear answers.
How many sets do you actually need?
More sets means more muscle — until it doesn't. Here is the dose-response curve for weekly training volume, and the point where extra sets stop paying you back.
Sleep is a training variable
You can nail the lifts and hit your protein and still lose the muscle you just built. Here is what the research says short sleep actually costs you.
Rest longer. Grow more.
Rushing between sets to keep the pump costs you both strength and size. Same program, same volume — only the rest changed, and the results doubled.
The best lift for every muscle
A hypertrophy tier list, and the three properties that decide where a movement lands. What actually builds muscle, and what to stop wasting sets on.
Four supplements actually work
The shelf has hundreds. The research backs a handful. Here is what is proven, what is marketing, and the doses that matter.
How strong can you actually get?
Muscle doesn't grow in a straight line. Here is the real curve — for men and women — and why your first year is the most valuable one you will ever train.
The biggest risk factor nobody tracks
Across 122,000 adults, low cardio fitness predicted early death more powerfully than smoking, diabetes or heart disease. It is also the easiest one to change.
You lose it slower than you think
Two weeks off does almost nothing. Here is the real timeline of what you lose and when — plus why coming back is far faster than starting.
Six gym habits that deserve a red card
No warning. No VAR. Six habits that are costing you progress, other people's sessions, or both — and the actual rule behind each one.