there are simply two things every successful friday needs:
1. a blast from the past, such as favorite clips from The Karate Kid, etc.
2. an excuse to get up and get all the weekday wiggles out
so i'm going to suggest this treat from 1989, if i may...
if you're not a visual learner, wikipedia has some helpful, descriptive advice:
"To do The Freddie, simply stand in place; then, in rhythm with the music first extend the left leg and left arm; then the right leg and right arm. Repeat until the song's conclusion."
you can even kick it vintage, if that suits you.
the mashed potato is also a good option,