ASP.NET Core Razor - post checkbox value as yes or no to database

Question

I have the following checkbox

 

<input type="checkbox" name="chk1" asp-for="MinPPE.Head" checked data-toggle="toggle" data-on="Not Required" data-off="Required" data-onstyle="danger" data-offstyle="success" data-width="150" data-height="50"/>

In the database, for MinPPE.Head I want to have Yes if checkbox checked (Required) and No if not (Not Required). How do I build my Post statement?