day, and then it tells u how much calories, carbs, protein and fat you ate. it's really helped me look at what i eat, and put things into perspective as to what i eat too much of and too little of.
furthermore, if you are hoping to lose some weight, or gain some, or i imagine stay the same even, they help you determine how many calories you should eat, how much protein, fat, and carbs your allowed as well daily. they also tell you how many calories you should burn daily.
and my last little plug on the site, is that it also has a strength training section, which they just 