I'm having a glass of water on an empty stomach as soon as I wake up on Wednesday, too. It has become a habit now, so I find myself automatically heading to the water dispenser. Have a glass of water.
공복 물한잔 건강에 좋지요
공복에 물 한잔 잘하셔써요
습관이 되면 공복에 물챙기기가 편하더라구요