Q:

String does not conform to type AnyObject in NSarray Swift

I am creating a custom object in swift. One of the properties of that object is an array, meant to contain strings:
Exersice (name: "Test", type: "Test", muscles: NSArray(objects: "muscle1", "muscle2"), descriptionString: "Test", pace: true, sets: 1, reps: NSMutableArray(15, 12, 12), time: false, duration: 0)

This is the part the question is about:
muscles: NSArray(objects: "muscle1", "muscle2")

I keep on getting an error: 
String does not conform to type AnyObject

I just don't understand why. Looking around on the web shows many cases of this error, but none in this context or helpful in solving this problem.
How do I get rid of this error? Any help would be highly appreciated

A:

The problem here is not NSArray(objects: "muscle1", "muscle2"), but this:
NSMutableArray(15, 12, 12)

This should be
NSMutableArray(objects: 15, 12, 12)

But, as @NateCook said in his answer, you should use Swift Array.

