Watch Jo Frost Extreme Parental Guidance online: Episode 6 Michael

Jo focuses on a serious but hidden threat to the health of the UK's children: sleep deprivation. In many homes up and down the UK the same battle takes place every night - parents trying to get the kids to go to bed, and children trying to persuade their parents to let them stay up later. But how many parents actually know the number of hours sleep their kids really need? Jo wants to find out what effect having less sleep has on children. Working with the UK's leading expert in child sleep issues, Dr Cathy Hill, Jo monitors the sleep habits of a group of 10-year-olds to find out exactly what impact insufficient sleep has on their behaviour at school and at home. Jo also meets four year old Michael who rules the family roost. He has learnt to play his parents against each other and scream until he gets whatever he wants - but as he prepares to start school is it too late to instil discipline? Jo doesn't think so.

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