Double-under is a conditioning movement on Fiz. Jump rope with double rotation per jump. Also known as du, dubs. Primary muscles: cardio, calves. Scored by reps. Featured in Annie, Bell Tower, Filthy Fifty, Open 17.5, Skill Primer, Toes & Doubles.
Double-under
also du, dubs
Jump rope with double rotation per jump
Category
Conditioning mixed-modal work under fatigue
Logged as
Reps the field Fiz records for this movement
Primary muscles
cardiocalves
Secondary
shouldersforearmscore
Appears in
Scaling ladder
1 harder, 1 easier
Double-underWorks cardio, calves
Single-underStandard jump rope
Workouts using the double-under
6 on FizFrequently asked
7 answersWhat muscles does the Double-under work?
Double-under primarily works cardio, calves, with secondary engagement of shoulders, forearms, core.
How do you do a Double-under?
Jump rope with double rotation per jump.
How is the Double-under scored?
On Fiz, Double-under is tracked by reps. Log your reps, weight, distance, or time and build a movement history that powers leaderboards and PRs.
What's an easier alternative to the Double-under?
Easier scaling options include Single-under. Each is a standalone movement in the Fiz glossary you can swap into any workout.
What's a harder progression from the Double-under?
Progress to Triple-under when Double-under feels light.
What else is the Double-under called?
Double-under is also written du, dubs. Fiz resolves all of those spellings to the same movement, so a workout written either way logs to the same history.
What workouts include the Double-under?
Annie, Bell Tower, Filthy Fifty, Open 17.5, Skill Primer, and 1 more. All free to log on Fiz.