Knowing when when you need to catch some Z's is very important. Sometimes in life you wear yourself down and you end up getting sick if you don't sleep. So get some sleep take care your body. Be well rested because it will impact your entire day. If you don't believe it, stay up all night and try and work the next day through and see how you do. So take care yourself so you can take care of others. After all, it's the right thing to do and it models the way for others.