Is your baby fussy? Could be that she is overtired, and become less fussy quickly with some simple sleep tips.

Do overtired babies get a cortisol and adrenaline surge? Sarah Mitchell reviews the research, explains the second wind, and shares what to do instead.

Wake windows by age from newborn to 24 months, with a free chart. Sarah Mitchell explains how to use them, signs they're off, and when to adjust.

Does your baby only sleep while rocked, bounced, or in the car? Learn why babies crave motion, when it becomes a sleep crutch, and how to gently transition away.