How to keep section titles together with the content in ConTeXt?

I found many places in my document where the subsection titles are places alone at the bottom of the page with the content on the next page, like this:

 ____________ ____________
|            |            |
| Section    | .......... |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
| Section    | .......... |
|____________|____________|

I do not want any section titles to appear without any text below them, e.g., this will be fine:

 ____________ ____________
|            |            |
| Section    | Section    |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
| .......... | .......... |
|            | .......... |
|____________|____________|

• I used startsubsection and stopsubsection to define the whole section text.

Is there any way to make sure that the section titles always appear together with at least one line of text from the paragraph inside?