My weight aways goes up and down between 5 and 10 lbs. There was a diet I used when ever I wanted to lose 10 to 15 pounds quick. No it's not healthy but it worked. The cabbage soup diet. You can't go far from home, lol, but it will definetly take pounds off in a matter of days!
And walking always does it for me too. But now I've gotten kind of lazy and can't even make myself get to the track.
I used to do the cabbage soup diet from time to time, then I went to a nutritionist and she told me the problem with those diets is they make you lose weight quickly but that weight you lose is mostly muscle, so when you stop the diet, it all comes back in fat, not muscle.
Im kind of lazy lately for exercise too, sucks :P