Early risers are people who naturally wake up early in the morning. Their body clock causes them to get up while most of us are still in deep sleep. Researchers said early risers could have some shared DNA from Neanderthals – our ＿＿（41）＿＿ who lived over 40,000 years ago. Neanderthals lived in northern parts of Europe and Asia. They woke up earlier to hunt for or gather food as the sun ＿＿（42）＿＿ . Scientists have spent a long time looking at why some people are early birds, while others are night owls. They looked at a medical database with ＿＿（43）＿＿ information for hundreds of thousands of people. They compared the DNA of people who said they were early risers with the Neanderthal DNA. Their research found more examples of Neanderthal DNA ＿＿（44）＿＿ in the early risers. However, it is likely that the Neanderthal DNA is not so strong in many people. The effect of the Neanderthal DNA may be ＿＿（45）＿＿ as the centuries pass. Our modern lifestyles mean many of us prefer sleeping in to leaving the comfort of our bed. Nevertheless, it may still be true that the early bird catches the worm.