I'll add on: d) they can't run, climb on the playground equipment, or catch/ fetch your child if they fall/ get stuck e) they have no laps to hold kids - fupas in the way f) they can't pick kids up or carry them much (if at all) g) so much up&down, up& down from the floor. SheHams be all like "owwww muh leeeegs!" I realized I needed to increase my upper body strength about a month in to my preschool job bc I was doing all these things, but was sore & tired. Now, I'm airplaning them around, can carry 2 at a time, and boy do they love it when I do overhead presses with them :) I'm really happy for y'all that you found a good caregiver for baby shitlittle! Congratulations dad! :)