Comment SIMPLE for my free guide to simplified adhd. 💤 Sleep isn’t laziness — it’s neuroscience. Sleep researcher Dr. Wendy Troxel has shown that during adolescence, the circadian rhythm naturally shifts about 2–3 hours later, meaning teens’ brains don’t even start producing melatonin until much later at night. So when your teen can’t fall asleep before midnight and struggles to wake up for that 6 a.m. alarm — it’s not defiance, it’s biology. And for teens with ADHD, this delay is often even st