Sleepy after 9pm...so I start to baby sling my 3YO and 1YO :D

It has been happening nowadays...I have a hard time keeping myself awake after 9pm...despite drinking coffee at the same time while watching tv with my kids. I'll start to doze off at a corner of the room or my bed while the 2 little ones jump up and down...run in and out of our room... while watching tv... or Hamzah mimmick dangerous stunts while I am almost knockout due to tiredness from a whole day's work. And the pushing and crying thing starts.... Where do these kids get their energy from....sometimes i really wonder? I gotta have lots of things to do with them to 1. keep them busy and 2. to prevent myself from falling asleep. Baby slinging them is 1 of the great things to do! I am trying to ringsling them at the back now...trust me its quite difficult to put your little ones on your back while struggling to put the ringsling cloth over them... and mind you...the 1 yr old just kept letting go of her hands and start to giggle each time she slipped off my back a bit...like something fun! Oh and slinging Hamzah...gosh! I didn't realise how much he had grown! Tiring on the back. But I managed to sling him at the front :D and Chinese writing time...i bought 2 chinese writing books for kids... actually they are for 3 yrs and up...but I just gave 1 to each so that both have something to do and not fight with each other. 1 book and 1 colour pencil each (no more no less...cos they'll fight from each other) I think its fun! both thought it to be some kidn of drawing book that u need to follow the dotted lines... and each time they connect the dots... they say out the name of the strokes such as "点提" "竖弯勾" "横折" etcetc. That sends them giggling and busy for a good 1 hour too.