Thanks flipper for your recommendation and personal experience.
Already practiced these in principle for over a year with less intensity though than recommended: probably only 3,000 to 6,000 steps a day, heavy swimming two or three times a week, occasional weightlifting, hiking, etc.
My blood pressure dropped, but weight remains in an undesirable level after an initial drop somewhat. Don't want to punish myself for not eating delicious foods, particularly meat with some fat. So it's no dieting for me except consuming less amount. That explain it's hard for me to chop a few more pound, which I accept at the time being, unless I increase exercising intensity and/or go on a diet.
My experience/observation of myself that drinking helps gaining weight, particularly in the waist, seems contrary to popular belief.
Maybe people are really different on this matter.