title: Pandas: Nesting Dataframes
body: <p>Hello I want to store a dataframe in another dataframe cell. 
  I have a data that looks like this <a href="https://i.stack.imgur.com/PECeY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/PECeY.png" alt="enter image description here"></a> </p>
  
  <p>I have daily data which consists of date, steps, and calories. In addition, I have minute by minute HR data of a specific date. Obviously it would be easy to put the minute by minute data in 2 dimensional list but I'm fearing that would be harder to analyze later. <br>
  What would be the best practice when I want to have both data in one dataframe? Is it even possible to even nest dataframes? <br>
  Any better ideas ? Thanks!</p>