Single-under is a conditioning movement on Fiz. Standard jump rope. Primary muscles: cardio, calves. Scored by reps.
Muscles Worked
Primary
cardiocalves
Secondary
shouldersforearms
Scoring
repstracked
Scaling Alternatives
Harder
Frequently Asked
What muscles does the Single-under work?
Single-under primarily works cardio, calves, with secondary engagement of shoulders, forearms.
How do you do a Single-under?
Standard jump rope.
How is the Single-under scored?
On Fiz, Single-under is tracked by reps. Log your reps, weight, distance, or time and build a movement history that powers leaderboards and PRs.
What's a harder progression from the Single-under?
Progress to Double-under when Single-under feels light.