> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/ladybug-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/ladybug-primer/components/4_extra/pet_body_parameters.md).

# PET Body Parameters

![](/files/59FAPOmytp0OhPjED7HD)

![](/files/ywEsuiw2GTSW7QSc7b28) - [\[source code\]](https://github.com/ladybug-tools/ladybug-grasshopper/blob/master/ladybug_grasshopper/src//LB%20PET%20Body%20Parameters.py)

Create a set of parameters that define the body characteristics for the PET model.

These parameters can be plugged into any of the components that compute PET thermal comfort.

### Inputs

* **age**

The age of the human subject in years. (Default: 36 years for middle age of the average worldwide life expectancy).

* **sex**

A value between 0 and 1 to indicate the sex of the human subject, which influences the computation of basal metabolism. 0 indicates male. 1 indicates female and any number in between denotes a weighted average between the two. (Default: 0.5).

* **height**

The height of the human subject in meters. Average male height is around 1.75m while average female height is 1.55m. (Default: 1.65m for a worldwide average between male and female height).

* **body\_mass**

The body mass of the human subject in kilograms. (Default: 62 kg for the worldwide average adult human body mass).

* **posture**

A text string indicating the posture of the body. Letters must be lowercase. Default is "standing". Choose from the following:

```
* standing

* seated

* crouching
```

* **humid\_acclim**

A boolean to note whether the human subject is acclimated to a humid/tropical climate (True) or is acclimated to a temperate climate (False). When True, the categories developed by Lin and Matzarakis (2008) will be used to assess comfort instead of the original categories developed by Matzarakis and Mayer (1996).

### Outputs

* **pet\_par**

A PET comfort parameter object that can be plugged into any of the components that compute PET thermal comfort.