We love to publish contributions from our young readers. This was written by 8 year old Janvi, from Cardiff.
If there were to be a parallel universe I think there would be people who lived their lives, like us, only in reverse!
You would start off old with white hair, pains almost everywhere and maybe even glasses and/or a walking stick. You would live in a retirement home with lots of old people, like you. You would spend your time sitting in your favourite chair snuggled up with a quilt and would take medical pills daily. But one day when you would get up to have your daily walk you could get up much easier and you could walk around faster and more swiftly.