@thatsleepdoc: This amazing resource was created by @_tomvaillant, a video and visual journalist. Amazing visuals. But wait? What about Romanian orphanages and learned helplessness, or polywoly nerve theory, etc etc. There are many many theoretical arguments. And much of the “science” presented against sleep training is just that… theoretical or extrapolated from situations that don’t apply to sleep training. The website lists the theoretical stuff too and breaks it down well. Cortisol you say? I’ll break that down in a future video. You may be surprised. Remember, it’s just an option. Do you have to sleep train? Of course not. Research shows clear short and medium term benefits. But long term, 5-6 years out, you can’t distinguish those that were sleep trained from those that weren’t. This applies to sleep, but also many other measures of well being.