Fitness Tracking 🔗

The post will describe how I track my fitness journey so far.

Slight background: I am on the journey to be the person who goes to gym daily, my goal is to reduce weight, and get lean. I go to cult for gym.

What all I track so far? 🔗

• Weight (morning and night)
• Number of weeks I had been regular in gym/number of classes attended.
• Occasional BMI and other metrics from InBody machine installed in the gym I go to.

The actual exercises I do, and the number of reps/PRs etc are tracked in the Cult app itself, and for now I had not went into finding the API for that to extract that data into sheet.. Maybe sometime in near future :)

How I track all this? 🔗

Weight 🔗

I have a simple google sheet which looks like this:

Column D and E are calculated as Di = Ci - Bi, Ei = Bi+1 - Ci tracking how much weight changed in that day, and the next day.

Until sometime back, this was the interface I used for updating weight everyday: open sheet, add date if not there, add the weight entries. I have a better way which uses this sheet itself as database/backend, gonna come to it at the end.

Number of weeks I had been regular in gym/number of classes attended. 🔗

This data is something I occasionally run a script (I should probably automate this) which calls CULT’s API to get the data, and I put that manually into a google sheet then. Figuring out exact API was done by downloading raw cult apk, pass it through apk-mitm and then use http-toolkit to intercept the traffic while I visit corresponding page in the app to see the API that the app calls..

The script looks something like in this.

The sheet then looks like with self-explanatory column names.

Again, this sheet also acts as a backend now, with frontend I will describe at the end on how do I visualize all this.

Occasional BMI and other metrics from InBody machine installed in the gym I go to. 🔗

This is also backed by google sheet, and I have no automated way to get this data, I just manually enter it into the sheet.

From the GYM, I get the data printed on a page, from which I manually enter to the frontend I am gonna describe next.

The sheet by the way looks like:

Frontend for all this 🔗

Entering all this data manually into the google sheet is a hard task, which lead me sometimes missing recording the data. So, I tried to follow the advice that Atomic Habits book’s second rule of habit formation preaches: Make it easy.

So, the simplest way I thought was having an app in which I can quickly crunch in numbers (Ik google sheet also is the same thing, but the interface is hard to enter on the phone), so I used appsheet to quickly create a UI on top of the google sheets.

My app looks something like this:

Landing screen 🔗

This shows the weight entries, and a + button to add in new entries, and clicking on anyone brings interface like this: , where I can edit during night to record night weight.

InBody Results 🔗

Exactly similar to Landing screen, but another tab at the bottom for this.

Charts - Weight and Classes 🔗

The third tab has charts for how weight is progressing and for cult gym classes.

InBody charts 🔗

The last one has inbody charts for metrics: Body Fat Percentage, Total Fat (kg), Muscle Mass (kg), Visceral Fat Level, Waist Hip Ratio.