Some of them are obvious while others especially those involving behaviour are not so obvious.
- Moody, cranky or irritable especially in the late afternoon
- Difficult to wake in the morning or falls asleep during the day
- Acts especially clingy or needy
- Fidgety or hyperactive behaviour
- Wanting to consume unhealthy stimulants like sugar
- They may get sick more often
- Difficulty focussing and learning new information
- Has trouble sharing or taking turns
- Snores
