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.
Children who were toilet trained after 32 months were more likely to have urge incontinence -- daytime wetting and bed-wetting -- between ages 4 and 12. And potty training children sooner than 27 months generally doesn't work either, according to background information in the study.