In this age group, children had an increased likelihood of experiencing fatigue, mood swings, and also had trouble remembering or concentrating. Children with long COVID may feel fatigued after activities which were not previously difficult to cope with for them. This can affect their quality of life and confidence levels. Post exertional symptoms due to long COVID, which worsen after physical stress, include brain fog, muscle aches or headaches along with increased fatigue or extreme tiredness.