Isadora Ambrose on Instagram: "There’s a common belief that fathers should never cosleep with their babies. But research paints a more nuanced picture. Studies show that fathers’ bodies and brains adapt to night-time proximity. In research from the Philippines, fathers who slept with their babies had significantly lower evening testosterone than solitary sleepers. Lower evening testosterone is linked with greater nurturance and responsiveness, which keeps babies safer. Reviews of fMRI studies al