Another study also found that babies rated as more active during the day had more frequent awakenings at night (Scher et al 1998). (parentingscience.com)
Nighttime sleep may be disrupted, with frequent awakenings throughout the night. (kidshealth.org)
«The more prevalent, disruptive effects include more frequent awakenings, worse sleep quality; reduction of deep sleep, and earlier - than - usual waking times, leading people to feel they did not get enough sleep.» (sohoparenting.com)