Why do people abuse

Are most abusers narcissist
Is it a choice? Did they learn to?

1- a    2 - d3 - e4 - f5 - c6 - g7 - h8 - b

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

Making sure the equipment is cleaned daily and insuring proper hygiene is kept up with the working staff.