Database
[{"name":"Push Ups","muscleGroups":["Chest","Shoulders","Abs","Biceps"]},{"name":"Sit Ups","muscleGroups":["Abs"]},{"name":"Pull Ups","muscleGroups":["Abs","Biceps","Back"]}]
Query
db.collection.find({muscleGroups:{$all:["Abs","Biceps"]}})