I used to be a nutrition buff and was hardcore about the weight training. Can't say enough good stuff about eating right and working your body. If you built up the muscle mass, you need to find ways to maintain it, so keep your training regimen in your life. If you don't use it, you'll lose it. I agree with upping the protein and shakes are a quick and easy way to do it when you don't have time to cook. I had a lot of success with carb cycling when I was really into my body - it helped a lot with shedding fat and losing muscle (when accompanied with a training regimen). Good luck!