Introduction and in need of advice

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First I want to start by introducing myself. My name is Ashley and I am 21 years old. I'm in the process of enlisting in the US Navy and I am very excited. The only problem is that I exceeded the weight limit and I have to lose at least 10 lbs. I heard that they only go by body fat but I'm not sure. I would love to have some MFP buddies and it'll be very nice to meet you all. :)