15lbs in three weeks is a lot. For health standards you should only lose 1 to 3lbs a week. That can be mostly diet and making sure you’re hitting 10k steps a day. If you’re already doing that then knocking your cardio up.

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Pick stuff up and put it back down daily

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Depending on your starting weight it’s possible. Drink a gallon of water a day (gets rid of water weight plus your stomach is too full to eat=weight loss) Intense cardio (weight loss) Lymphatic drainage massages at home (get rid of excess fluid)

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Carnivore diet, you will most likely lose 10 is lbs of water weight in the first two weeks, plus the fat loss from your body breaking down the protein

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Fast from dinner until breakfast (should be 14-16 hours to start ketosis or breakdown of fat cells). Do cardio regularly (walk/run). Maintain a calorie deficit. Drink plenty of water.

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fasting. probs the only way to lose that much weight that fast tbh. you’re grasping for physical extremes atp

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