[Swizec]

I would wager this depends a lot on the type of activity you're doing.

Sometimes after a really hard boxing practice I can be so hungry that I physically can't eat any more food, but I'm still hungry. And no, it isn't just a bug in the brain, the calorie tracker also agrees that I haven't eaten enough.

[beagle3]

> Sometimes after a really hard boxing practice I can be so hungry that I physically can't eat any more food, but I'm still hungry.

For me it is the complete opposite - I can't eat or even think of food for a while, and am definitely not hungry or have any appetite -- and the harder the practice is, the longer it takes appetite to recover. (My practice of choice is thai boxing, btw...)

[Swizec]

This is usually an hour after practice. Takes a while to get home, take a shower, prepare the food etc.

[sandGorgon]

very true - but one is not asking you not to eat after a boxing session. One is asking you not to eat anything for the other 16 hours (assuming eating and boxing fall in the 8 hour block) - which is when your body, conditioned by Kellogs, starts sending panic signals.