If you are a WD follower, Ori's "Maximum Muscle, Minimum Fat" should be your guide.
I will add that, as a 54-year-old who has always been on the skinny side, the approach works for me, too. In a nutshell, instead of just having cleansing types of food during the day, you take in some protein plus a bit of carbs, which is about the contents of most nutrition products advertised as "recovery meals" and similar. Over the last year or so, I have begun having homemade nut butters during the day, and/or a protein bar of some sort.
Although, in principle, the WD might seem the opposite of the six-meals-a-day approach, in reality, the MMMF approach isn't all that different.
Just my opinion, your mileage may vary.
-S-
KBNJ.COM - Steve Freides, RKC II