The first few months of a baby's life are filled with milestone moments, the first smile, the first giggles, and the end of the tiring fourth trimester. Historically, surviving the first 100 days was the biggest milestone of all. Ancient cultures viewed 100 days as the critical threshold where a newborn’s fragile immune system stabilized and the mother recovered from childbirth. Across Asia and parts of the West, the 100-day mark remains a deeply symbolic transition from surv