right lets but this into perspective, I run Marathons according to my garmin I burnt 4020 calories running 26.2 miles in Berlin last year, by the time you've added extra onto your KFC binge, such as breakfast, lunch, drinks etc. you will have eaten loads more than you could ever hope to burn off, even running a marathon wouldnt burn it off! and you need why its bad explaining to you?
After lurking for a while, I felt compelled to respond to this in particular.
This is entirely based on conjecture. Your "calories burnt" calculation will be, at best, based off a height and weight input plus an estimation of your basal metabolic rate. The only point you are making is that *you* wouldn't be able to burn that amount of calories off. People can have vastly differing basal metabolic rates depending on their body composition. Many professional powerlifters and bodybuilders need in excess of 7000 calories a day just to
maintain their weight and body functionality due to their composition. If you then factor in calories burnt from training, you will find that some of these athletes can eat upwards of 10,000 calories a day at peak training periods.
Specifically with regards to training, someone who is able to run a marathon at 15st+ is going to burn through far more calories than an individual at 10st if the intensity is proportionally kept the same, which completely invalidates your one-size-fits-all calories burnt calculation.
Also, it wasn't mentioned anywhere that the KFC would be part of a greater food binge. I've done a 12 piece boneless box myself before and, unsurprisingly, I've really not felt like eating much else in the day.
It is therefore perfectly reasonable to expect someone to burn through that amount of calories in a day if they're heavily built with a high basal metabolic rate, even without adding the calories burnt from training into that.