No doubt this question has been asked a million times...how many calories does a person need per day to lose weight but maintain the hard workouts? I have heard a million answers. Everything from 1200-2500. I definatley lose weight if I keep it less than 1400 but I've heard so much about that being not enough calories. Occasionally I'll go up to 1800/day but then I gain weight. I'm doing 6 days of cardio (either a Cathe tape or Spinning) 2-3 days of power yoga, and 4-5 days of weights (PS series). So if I go up in calories will I initially gain weight before my body adjusts and then it will go back down or is 1800 really too much?