The f(x)

Today’s workout is inspired by functions. If you have taken calculus classes, you’ll probably understand this little joke that gets passed around among first-year science majors:

Get it?

Every time I do a cardio drill on the battle ropes, the waves remind me of sine and cosine graphs.

Our function workout has a few cardio drills with the battle ropes, and a resistance set inspired by the function f(x) =y. You’ll be doing “1 for 1″ mini-supersets. On the first exercise, for example, you’ll do a chest press of your choice, hop off, and immediately do a pushup. After that, you’ll go right back into another press, followed by another pushup, and so on for a total of 10-15 times. Then move on to the next exercise. If you don’t have battle ropes available, sub in a different cardio drill like jumping jacks or jump rope.

The f(x) Workout

f(x) = sin(x): 30-60 seconds battle rope waves

f(x) = y: x/y – 1 of x immediately followed by 1 of y

Chest press/pushup X10-15

Triceps extension/triceps pushup X10-15

Weighted squat/jump squat X10-15

Barbell curl/Reverse grip body weight row X10-15

Barbell or hex bar deadlift/stability ball hamstring roll-ins X10-15

f(x) = cosine (x): 30-60 seconds battle rope waves

Complete 3 circuits.


Part inner nerd and part aspiring jock. Mostly inner nerd, though.


  1. Brilliant! This is the best thing I’ve seen all day, thanks for the inspiration!

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