With school holidays starting this weekend many families will be taking road trips. Before you get behind the wheel, follow Dr Libby's tips for a safe journey.
• The best meal a driver should have before a long road trip is something that sustains you, so foods that contain protein and fat such as eggs.
An ideal breakfast would be a cooked egg meal "because when you eat warm food your digestive system handles that really well".
• Don't forget the kids because a cooked breakfast is sustaining for them, plus the more stable their blood-sugar levels are, the less likely they are to get hungry quickly or to fight. "When blood sugars are low we can get a bit snappy and impatient," says Dr Libby.
• Snacks are important. Rather than having to rely on poor-quality roadside snacks, pack things that people like - but don't pack carrot sticks if people aren't going to eat them. An easy snack is nuts and raisins, or try Dr Libby's "brain balls" from her recipe books: ground-up nuts and seeds plus dates for sweetness and cocoa powder for chocolate flavour.
• Forget drinking strong coffee before a long road trip. Dr Libby suggests drivers should have green tea because it has a small amount of caffeine in it and a substance called theanine - an antioxidant that helps buffer the caffeine and gives you a more gentle, relaxed state instead of being hyped up on coffee.