If you are guilty of only getting six hours sleep a night, you are four times more likely to get a cold, a sleep expert has revealed. Olivia Arezzolo said there is a huge connection between sleep and health.If you are guilty of only getting six hours sleep a night, you are four times more likely to get a cold, a sleep expert has revealed. Olivia Arezzolo said there is a huge connection between sleep and health.Read MoreHealth News | Mail Online