Drinking protein shakes is a good way of helping you lose weight because it helps you feel full while reducing your calorie intake.
You could lose weight just drinking protein shakes and watching your calorie intake with other foods and going on a good healthy diet.
But you'll lose much more weight much faster by drinking the protein shakes as well as exercising such as riding a bicycle, using a treadmill, hiking, walking, running, jogging etc.
The exercise will also be good for your health and you'll have improved health as a result of exercising while drinking the protein shakes.
Protein is good for our health as well so the protein shakes will help with weight loss but always add in at least some exercise no matter how small.
Even taking a 5 or 10 minute walk or walking wherever you can instead of driving can help you lose weight.
You should be able to lose between 5 to 10 lbs of weight per month with drinking protein shakes and exercise.