Often when children are grumpy or cranky, their parents know it’s because they need some sleep. Is this true of adults? How are our moods affected by lack of sleep? People are more likely to suffer from depression, anxiety, have slower response times and negative effects on memory from lack of sleep. A tired brain is also more likely triggered by a fight or flight response as opposed to a well-rested one. This leads to mood swings and exaggerated responses.....