"protein shake fast" is not a fast. It is a calorie restriction diet. Probably the worst kind you can imagine. I lost 60 pounds once, then regained it back and

"protein shake fast" is not a fast. It is a calorie restriction diet. Probably the worst kind you can imagine. I lost 60 pounds once, then regained it back and then some. I lost it again but the second time I made it my mission to understand what I do and make it stick. It seems to be working. It is better to get healthy to loose weight that loose weight to get healthy. With healthy habits and healthy food your body will naturally shed unnecessary weight over time. The second time I lost weight, for good, I focused on building good eating habits. Learning new healthier recipes (to displace unhealthy food). Running every day. Intermittent fasting rather than restricting calories. Building metabolic flexibility so my body is good at living off of its fat stores. I was loosing up to 15 pounds a month for three months straight while not feeling hungry.