https://www.merriam-webster.com/dictionary/groggy

Groggy – adjective

Definition: weak and unsteady on the feet or in action

“When you’re sleeping, your muscles become sore so that waking leaves you groggy. ”

As i came upon the article “8 Ways to Energize Each Morning” I came across this word and I used context clues to figure it out and I basically thought of the word tired and restless. I was pretty close and a little accurate on my guess. One example would be When i come to class on Wednesdays i feel groggy.