Some people who drink coffee become super hyper, and sometimes they can't sleep if they have too much!

H-Y-P-E-R.Hyper.[ˈhaɪpər]

Hyper means to be extremely  excited or nervous.I am pretty sure that we have all experienced being hyper.

I have two example situations for you all.

Example one: When we give speeches or presentations at work in front of our peers and our boss.

Example two: Most of us who have been to university have felt hyper the night before our big day.

It is a mix of being excited and nervous because you don't know what to expect. So you're pretty hyper the night before.

Here, let us look at some example sentence:

Example 1:

Please don't let him play video games before bed. They make him hyper and he won't go to sleep.

Example 2: