some info that might help
Question: Why does my lap band feel tighter in the morning?
Answer: According to Dr. Kent, the reason that lap band patients can't eat solids in the morning is two fold. First, there is the effect of gravity. Most of our patients will note that their ankles swell on prolonged standing. In a like manner, when patients are asleep in the horizontal position, their bodily fluids will seek the lowest level. That level will likely include the level where their lap band is located so that the tissues it surrounds will engorge with fluid and thus not allow the passage of any non-liquid food for many patients who are well adjusted (i.e., have restriction). As the day wears on, fluid will seek out the lowest level--more toward their ankles and feet-- and thus the fluid located in the tissues at the level of the lap band will diminish as it moves toward the patient's feet. So, later in the day, there will be less restriction at the level of the lap band and the patient will be able to swallow solid food.
There are also a number of patients who need to drink liquids before they eat so that they will be able to take solid food--regardless of the time of day. Dr Kent’s interpretation of this is that those patients need to "warm up" their stomach and get it accustomed to accommodating food and passing it on before they can take solids; this is similar to the situation of a runner who walks, jogs, and then runs to get blood flowing to their muscles before they race