title: Is There a way of returning a queryset of the first instance of a specific field from a django model
body: <p>Say i have a model called Workout, and its populated as such<a href="https://i.stack.imgur.com/xM1SS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xM1SS.png" alt="enter image description here"></a></p>
  
  <p>I want to return a queryset of the first instance of each new date filterd by the current user. In this case, if the current logged in user is user_id = 1, the queryset would contain the workout objects with id 1,4 and 5. Is there a way of achieving this using a Workout.objects... method?
  Cheers.</p>