"This theory states that the brain can only focus on a select number of sensations at once," explained the post.
"Because the nerve ending on your hands are closer to your brain, they reach your brain faster."
A humble plastic comb is being hailed as a miracle pain relief tool during childbirth. Photo / Getty Images
According to the post, the most effective way to utilise the comb is holding it so the base is against your fingers, with the teeth pressing into the palm of your hand.
Many mums have since commented on the post, confirming the hack does really work - and not just for childbirth pain.