For those that do a lot of travelling these sunglasses could be a worthwhile investment. Designed by Australian sleep researchers the product called the Re-Timer emits a soft green glow that helps the wearer to adapt to changing sleep patterns and time zones. They target the part of the brain that regulates the human body clock helping the body to realise it is an different area of the world. The battery powered device retails at £162 and can be worn as sunglasses during daily tasks such as reading and using a computer.
