seriously....it's literally the easiest thing to do. I made the decision to stop drinking soda sometime during my 2nd year of college. Was drinking 2-3 cans of full sugar soda/drinks per day, Started drinking diet soda, added plain green tea (about 1L cold brew per day) and water, and lost at least 10lbs from just that (was 135lbs at my heaviest not counting pregnancy at 5'2") With the sheer amount of soda these sugar addicts consume, cutting to diet and/or unsweetened tea+water would probably be an EASY 10-20lb weight loss. But muh excuses.