Confused on how many calories I should have a day?
I'm a 15 year old girl who plays competitive tennis. I practice for 90 mins everyday and have tournaments every weekend plus im doing weight training. Calorie calculators say i should eat around 2500 but I tried eating that much for a week and I gained a pound of fat i'm pretty sure. I can maintain at 1800 calories but I feel like I should be eating more. What do you thinK?