Sloth
Sloth's lazy image 'a myth'
The sloth's popular image as a lazy creature that sleeps for most of the day has been called into question.
Ref. https://news.bbc.co.uk/1/hi/sci/tech/7396356.stm
That is very true and the effect is exponential with the stress levels. I also think the lack of physical activity for long duration adds to this. A good foot ball (soccer) game or just tag is great and brings up the good feelings and chemicals that release with laughter. Even the pleasure of having weeded a garden can help. Our lifestyles are a major issue I am sure.