[USER (data scientist)]: Cool, got it. Now, how do I adjust the BMR based on their activity levels? Please read the 'fastfood' dataset into a DataFrame and define a function to calculate the daily calorie goal based on basal metabolic rate ('bmr') and activity level, returning a float representing the calorie goal.
My template of code snippet is:

---BEGIN CODE TEMPLATE--- 

import pandas as pd
import pickle

# Read the fastfood data 
fastfood = pd.read_csv("fastfood.csv")  

# YOUR SOLUTION BEGIN:
<code1>
[GENERATE YOUR CODE]
</code1>
# YOUR SOLUTION END: 

---END CODE TEMPLATE---

[YOU (AI assistant)]: Good question! We can use activity level multipliers for that. Here's a Python function that takes the BMR and activity level, and gives you the adjusted daily calorie intake goal:
