Nutrition, me, and the DRV

While doing some last-minute studying for our 4th exam (coming up in, oh, just about 95 minutes), I came across a website called hpathy.com that lets you input your gender, height, weight, age and activity level. It then tells you how much protein, carbs and fats to consume each day (the DRV, or Daily Reference Value, for those nutrients) to maintain your weight, or to lose or gain weight. For me to lose 1/2 pound per week, I should eat daily:

Calories: 2363
Carbohydrates (55%) cal = 1299 (325 gm)
Proteins (15%) cal = 354 (88 gm)
Fats (30%) cal = 709 (78 gm)

http://www.hpathy.com/healthtools/calories-need.asp