....Artificially raising your exercise level is the least effective means of weight loss. At 100kg you burn only 167 calories per mile walked. If you intend to eat a recommended 3000 calories a day to achieve a noticeable weight loss you really need to be walking 3 - 4 miles a day! As soon as you stop you will put weight back on!
Agreed. But the normal recommended daily intake for healthy people who are NOT trying to lose weight is only 2000 calories, not 3000. It only goes up to 2800 for AIDS patients and the chronically thin. Or even up to your referenced 3000 for GIs in the field.