Biting your tongue or cheek when chewing can ruin a tasty meal. But thankfully, mouth wounds heal up fast — faster than cuts on skin — and now scientists know why. According to new research published today in Science Translational Medicine, mouths are primed for healing. The find could help researchers transfer the mouth’s curative superpowers to make skin lesions heal faster too.

Paper cuts, scraped knees and similar skin wounds take about a week to heal. But pressure ulcers, traumatic