Quote (rlebar @ Oct 20 2014 03:24pm)
500 cals/day is ideal.
More than that and your body will probably also use muscle as energy to a point. Basically, you'll get weaker.
1 lb a week is best. Plus it's also better for your skin. Losing too much too quickly fucks with the elasticity of your skin and you can get flabby. some people handle it better than others tho
This, I have dropped some major weight in short periods of time doing more than 1000/day, but it's so easy to gain it back. Also, you will lose (or just maintain) strength if you are 1000 a day. 1000 a day is also very difficult to maintain over time. You might be able to cut some good weight in a month or so, but it becomes very difficult to maintain. You can also lower your metabolism by up to 800 kcal a day if you take extreme measures, so what works in the short term might eventually hurt you.