It's not so simple. People are different. Some people won't need your plan because they stay at low weight no matter what they eat. Others won't be able to follow your plan because it would require superhuman willpower.
I'm an example of the first category. I'm 6'2'' and 160 lbs, and have been like this for years. At age 27 I spent a whole year working from home, eating at McDonalds 1-2 times every day, going to sleep at 5am, and not exercising at all. Resulting weight gain? About five pounds, which I promptly lost after joining a gym. More recently, at age 32, I took a two-week vacation and literally spent it all in bed, playing video games and eating large amounts of chocolate and pastries. Resulting weight gain? Zero (actually a slight loss). This happened last month.
Since I'm at one extreme end of the scale, it's very easy for me to believe that there are people at the other end, who won't be able to follow your plan at all. Restrict them to 2K calories/day, and they just won't fall asleep unless they get a snack. They need a different way.
The laws of thermodynamics are true as far as they go, but they don't have anything to say about genetics, metabolism, hunger, or willpower. These are the real important factors in weight loss. The sooner we move away from a virtue-based worldview, the sooner we can start actually solving it.
I'm an example of the first category. I'm 6'2'' and 160 lbs, and have been like this for years. At age 27 I spent a whole year working from home, eating at McDonalds 1-2 times every day, going to sleep at 5am, and not exercising at all. Resulting weight gain? About five pounds, which I promptly lost after joining a gym. More recently, at age 32, I took a two-week vacation and literally spent it all in bed, playing video games and eating large amounts of chocolate and pastries. Resulting weight gain? Zero (actually a slight loss). This happened last month.
Since I'm at one extreme end of the scale, it's very easy for me to believe that there are people at the other end, who won't be able to follow your plan at all. Restrict them to 2K calories/day, and they just won't fall asleep unless they get a snack. They need a different way.
The laws of thermodynamics are true as far as they go, but they don't have anything to say about genetics, metabolism, hunger, or willpower. These are the real important factors in weight loss. The sooner we move away from a virtue-based worldview, the sooner we can start actually solving it.