I leave my biweekly gel manicure to the pros. I love watching the manicurists create tiny works of art on my nails, especially since it’s a skill I could never replicate at home. But a DIY pedicure?

How ‘super-agers’ keep their brains active in their 60s and beyond These high-functioning adults have found ways to boost their intelligence, memory and problem-solving skills – and feel sharper than ...