👉 Tiredness is a feeling of physical exhaustion or lack of energy that can occur when one has been working, exercising, or doing physical activities for an extended period. This feeling can be both physical and emotional, as it can indicate fatigue from various sources such as lack of sleep, dehydration, stress, or other health conditions like heart disease or obesity. It is important to note that a tiredness can also be caused by mental health issues like depression or anxiety.