We do get busy oftentimes, and we get tired of a lot of works to do. But we should give ourselves a rest. We should not overwork or else it will put our lives to risk.
I learned about someone who was overworked. She forgot about her own welfare. She may be excelling on her job but she's not taking care of her health. Eventually, she passed away at an early age.
It's a lesson learned that we should listen to our body. When it needs rest, have a rest! If you are sleepy, go head to bed. That's very important, to take care of ourselves and listen to body, and it can strengthen us. We should also have exercise routine to make our body stronger and healthier.