Today we had Craig and Gemma from Glasgow Science Centre on tour. They were telling use about the body.
Do you know why your bones hurt when you run for a long time or cycle?
It is the cause of a build up of lactic acid. That white stuff inside of the bottle is what lactic acid looks like.
We learnt that if you make you fist look like your going to punch something that is how big or small your heart is.
John P7
