Show Video Column when hyperlink is clicked


I think this is a simple fix, but I am having trouble making it work…

In a detail view, I have a list of the following columns:
“Exercise 1”
“Exercise 1 Video”
“Exercise 2”

I want the “Exercise 1 Video” to be hidden, unless the “Exercise 1” text is clicked. Then I want the “Exercise 1 Video” to hide when the “Exercise 1” text is clicked again.

What is the best way to do this? I appreciate any help!