food and feeling ugh

So I think my experiment went well today.  I did good eating all day and for the most part had good energy and felt good.  Then ate like crap on dinner.  Not really on purpose but it happened and now I feel like crap.  Eating good and feeling good go hand in hand.  And even though I knew that I never really felt it.  Now I think the motivation to stay away from that kind of food will be higher.  Even without the exercise I don't like feeling like ugh just because I had some cake.  It was a good hard lesson learned.