Question

Why do we get tired?​

Answer 1

We get tired because of lack of energy...and oxygen

Answer 2

Answer:

There are many possible causes for feeling chronically tired. It's important to rule out medical conditions first, as fatigue often accompanies illness. However, feeling overly tired may be related to what you eat and drink, how much activity you get or the way you manage stress.So, when our eyes see light, our brain gets signals that make us feel awake. But when its dark, the signals make us feel tired. This is part of a process called the circadian rhythm. This works like a natural clock in our body.