BMR / Maint Calories

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Just curious what everyones maintenence calories are. I just switched to maint (for medical reasons) and cant believe that its almost 2000 calories! After going to the gym and buring 400 calories, I need to eat a total of 2400 calories to maintain my current weight - That sounds crazy! Looking for people that eat so many calories and have been sucessful at maintaining. BTW - I'm a 31 year old female and my current weight is 185. Thanks!