Even though the study says water makes your body burn more calories, it didn’t actually measure whether that happened — so that part of the claim is just guessing.

Water-induced thermogenesis is significantly greater in metabolically inflexible, overweight individuals compared to metabolically healthy individuals.

During weight loss, the body's reduction in energy expenditure in the early phase is related to lower carbohydrate stores and less water inside cells, caused by decreasing insulin and increasing glucagon; in the later phase, it is related to the breakdown of fat and decreased metabolic activity in specific organs.

After losing weight through dieting, the body continues to burn fewer calories than expected based on the new lower weight, creating an extra daily energy deficit of about 100 kcal that may make it harder to maintain weight loss.

After losing weight, the extent to which metabolism slows down can help predict how much weight a person will regain, but this metabolic slowdown has a smaller impact on weight regain than how many calories a person burned before starting the diet.

When people lose weight, their bodies sometimes slow down more than expected, burning fewer calories at rest — and this might be why some folks struggle more than others to keep the weight off.