but what does it measure ?
and why is too much calories considered bad for you..............

for instance if chocolate has a lot of calories it's bad for you because .........?

hope my question makes sense and sorry if i come off a bit daft

Energy is needed for you to stay alive.

You can use energy up by exercising, and by keeping your body warm.

If you eat more calories than you burn, you store the extra calories as fat.

They aren't bad per se, but if you were to become overweight/obese, then it is very harmful to your health. Mostly people just want to stay in shape, so a few pounds of fat would be a 'bad' thing.

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