Hi, just so you are aware loosing 10lbs in 7 days is not sustainable or safe. To do this you are probably dehydrated and your body will start to go into starvation mode. Meaning next time you take in any large amount of calories your body will cling to it. There are 3500 calories in 1lbs of fat so you are either at a deficite of 35000 calories or very deydrated, be very careful with crash weight loss of this sort it can do real damage to your insides. I say this as someone who has really studied nutrition as a distance runner. You should not loose any more than 2 lbs in a week. Drink lots of water and eat some more food. Atb