Protein is an important part of any weight gain diet. If you are not getting the necessary daily protein intake from normal foods, drinking protein shakes is a good option and they don’t necessarily have to taste bad!
If you are short on protein to begin with your might be putting your muscles in a catabolic state (where you actually break down muscle tissue). By getting up to an intake recommended for someone who works out consistently and at least at a moderate intensity, the extra protein will help you either maintain or build muscle. I would recommend 1-1.5 times your bodyweight in grams of protein to take in daily. Don’t forget to include the protein already in your regular diet though.
With an optimal protein intake it will indirectly help you burn fat. The more muscle you have the more efficiently your body will use up excess calories that are normally converted to fat. I believe you definitely need to keep your protein up even if you are trying to get lean. It will help more than hurt in my opinion. I would rather lose less weight and have more lean muscle mass than lose more weight because of losing lean muscle on top of the fat. Remember, muscle weighs more than fat so you must take that into consideration. Don’t measure your success based on how much you weigh, base it on your body composition measurements. Get your body fat percent tested regularly to monitor your progress.
Here’s a cool homemade protein shake recipe which tastes great.
12 oz milk
12 oz pineapple juice
6 ice cubes
2 scoops vanilla protein powder
Blend it all up and it makes it a hell of a lot easier to drink.