> For the complete documentation index, see [llms.txt](https://help.mealiq.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.mealiq.io/programs/personalised-nutrition.md).

# Personalised nutrition

We use the Mifflin-St Jeor equation to calculate personalised nutrition calorie targets. Your programs can optionally use this to personalise nutrition targets for your customers by having them complete a "BMR" quiz during onboarding.

The BMR quiz takes the following information:

* Biological gender
* Age
* Height
* Current weight
* Current activity level
* Target weight
* Duration to reach target weight

We then use the results of this to calculate personalised calorie totals, and from this we can calculate any %BMR metrics you have defined for macros in your program, e.g. Carbs, Protein, Fat.

### How do I activate this for a program?

In Smorg Studio, go to Programs and select your Program, and from the plus navigation click "Edit nutrition constraints", and set the Personalised Meal Scaling option.

<figure><img src="/files/AHvv8yCxUKfBY04HgWLm" alt=""><figcaption></figcaption></figure>

### Can customers change these answers?

Customers can changes these answers in their Profile -> Personal Information settings in the end user app.

### Can customers change the calorie totals?

Customers can enter their own calorie targets in their Profile -> Personal Information settings in the end user app.