Nasa pays man to lay in bed for 70 days.  Not even allowed to sit up.  Through a dietitians calculations, he came and went at 200 lbs. http://nextshark.com/drew-iwanicki-nasa-study/ I just think it's funny when I read stuff like this because the fatties make excuses about gaining weight.  This man literally laid on his back for 70 days and didn't gain a pound because he was on the correct amount of daily calories. Relevant excerpt:  “I went into the study at 200 pounds and I left the study at 200 pounds three months later.  Some of the other restrictions for the diet were that it had to be very low in salt content. Overall the food was decent."