One reason why exercise can lose weight is that it consumes a lot of energy during exercise, and another reason is that exercise increases muscle mass, increases its own metabolic intensity and accelerates the consumption of body fat.

When the exercise stops, the muscle will slowly decompose, so with the decrease of muscle mass, its metabolic intensity will also decrease. The body consumes less and less energy every day and accumulates more fat.

So it will rebound after the movement stops, but the rebound speed will be very slow.