To that end, the Feels will come to those witnessing or living through a particularly moving moment when their heart is fullest and add additional emotion until the heart can no longer contain the pressure.
Most parents start the training when their children are between two years and three years old. But there's no official age, and you needn't potty train your toddler at all if you don't want to.
On average, girls are potty trained by 29 months, according to the University of Michigan Health System. Girls typically learn to control their bladder muscles and bowel before boys, who are trained at an average age of 31 months. However, toddlers become ready for potty training at different rates, so don't push your daughter to start training before she's ready.