How to read the Progress page in WattLog.pro — a guide to all 18 cards
The Progress page in WattLog.pro has two tabs and eighteen chart cards. That is a lot — too much to read all at once, especially at the start. This guide is a map: which cards to start with, what each one shows, why a card is sometimes empty and where to read more about it. I described every card in a separate article, using my own data from the 2026 season.
Where to start
| Question | Card | What to look at |
|---|---|---|
| Is my fitness going up? | PMC (Fitness) | whether the CTL line rises week after week |
| Am I overdoing it? | Form (TSB) and recovery alerts | TSB below −30 for several days, the “High fatigue load” alert |
| Do I ride consistently? | Training calendar | empty weeks and the streak of active weeks |
| Am I getting stronger? | Power-duration curve with period comparison | whether the current line sits above the previous one |
The controls above the charts
Before you read any card, check which period it shows. Above the charts there are three ready-made ranges — 6 weeks, 90 days and This season (from 1 January to today) — and two date fields for picking your own period. Below them the app always spells out the exact dates and the number of days, because “the previous period” is the thing that is hardest to guess.
- Compare with previous period — a checkbox shown only on the Performance tab. It adds the power curve and rider profile from a period of the same length that ends the day before the selected one.
- Download PDF — a report of both tabs for the selected period, to send to a coach or keep at the end of the season.
A map of all the cards
Form tab — fitness, fatigue and how your body copes with training
| Card | Answers the question | More |
|---|---|---|
| Recovery alerts | Does anything need a reaction today? | Building fitness or wearing myself out? |
| PMC: Fitness, Fatigue, Form | Is my fitness rising, and how tired am I? | |
| Training calendar | Do I ride consistently and to plan? | |
| ACWR | Am I changing my load too fast? | |
| Load by energy system | Which energy system am I building? | Am I training in the right proportions? |
| Cardiac drift | Does my aerobic base hold to the end of a ride? | Is my endurance improving? |
| Heart rate trends | Is my heart rate off my own normal? | |
| When you ride | On which days and at what times do I really train? | Where do I lose watts, and when do I ride? |
Performance tab — what you can put out right now
| Card | Answers the question | More |
|---|---|---|
| Power-duration curve and critical power | How much can I hold for 30 s, 5 min, an hour? | What kind of rider am I? |
| Weight and W/kg | Is my relative power rising — thanks to watts or to weight? | |
| Rider profile | Sprinter, diesel, puncheur or all-rounder? | |
| Records | When did I last beat my best? | |
| Time in zones | Where did the work go each week? | Am I training in the right proportions? |
| Energy systems | Which system paid for the training? | |
| Intensity distribution | Polarised, pyramidal or “medium-hard”? How evenly do I ride? | |
| Efficiency factor | Does the same power cost me fewer heartbeats? | Is my endurance improving? |
| Cadence efficiency | At what cadence am I most economical? | |
| Power by grade | Where on the road do I lose watts? | Where do I lose watts, and when do I ride? |
Why a card is empty
Most empty cards have one of a few reasons. Each card says what it is missing, but it helps to know them in advance:
| What is missing | Which cards it affects |
|---|---|
| Rides at all | all of them — importing the last 12 months from Strava fills most of them at once |
| An FTP on the day of the ride | zones, energy systems, intensity distribution, load by energy system, rider profile |
| A heart rate strap | efficiency factor, cardiac drift, heart rate trends, cadence efficiency |
| History | ACWR needs 28 days, heart rate trends 4 rides, the drift trend 6 rides |
| The right efforts | critical power needs three hard efforts of 2 to 12 minutes, the profile a best effort at each of the five durations |
| Distance and elevation | power by grade and climbing — trainer rides without a route do not count |
Three rules that help with every card
- A trend matters more than a single day. Almost every card shows a series — a single point is an anecdote, the direction is information.
- A chart shows what you rode, not what you can do. The power curve, the profile and the records only know about efforts you actually made.
- Compare like with like. A ramp test, intervals and an easy Z2 ride give completely different numbers by nature, not because of form.
The best place to start is the first article in the series: Building fitness or wearing myself out? Reading my season in the Form tab.
See your own season on the same charts
Connect Strava and WattLog.pro imports your last 12 months of rides and fills the Progress page straight away: fitness, power curve, zones and efficiency.
Try WattLog.pro for free →