Starting again

I am very frustrated.  I eat good and excercise every day. But I gained. Not sure if i am eating too much or it is just age. I am about 12 lb overweight now. I hope it is a muscle weight. But I have some imperfections I would like to fix. So I am going on Japanese diet starting Monday.  Will keep the progress here.
Today I am going to Pilates Boot Camp at Mind the Mat  #minthematchallenge
The best boot camp for civilized girls
 I lose about  700 calories in one hour.