Recent genetic studies have shown that if you are of European or Asian heritage, then around 2% of your genome originated from Neanderthals.
This legacy was picked up from 60 – 80,000 years ago, when successive waves of modern humans began migrating from Africa into Asia and Europe, encountering and interbreeding with their Neanderthal cousins who had evolved there from around 250,000 years ago.
Their hybrid children bore genes from both lineages, but eventually, modern human genes diluted Neanderthal genes to the extent that the species seemed to disappear from the archaeological record around 30,000 years ago.
Those Neanderthal genetic mutations which were not beneficial to modern humans were partially swept out by natural selection over time. But some remnants are alive in the genomes of Europeans and Asians today. So, if you exhibit any of the following traits, they may just be an echo of your inner Neanderthal.