Double, single
One single between doubles: nearly unbroken, with a breather built in.
4 × 10 doubles
Jumping higher than the rope needs on double unders
Safe. And exhausting after ten.
The cue
“Jump the rope, not the moon.”
What it looks like
Big, floaty doubles with a long hang at the top.
Why it costs you doubles
Height the rope does not need costs legs and lungs, and a long hang lets the wrists slow down so the second pass is late.
The fix
The drills for it, best first. The figure is the first one, at half speed — tap it to pause.
Doubles ladder
Builds unbroken sets one step at a time, and every rung is a win.
Up to 10 minutes
Fast wrists
The second pass of a double comes from the wrists speeding up, not the arms.
3 × 40 seconds
Can the camera see it?
dulike can see this one from any angle.
It watches your body, not the rope: a speed rope is a few millimetres across and faster than a phone records. Whether a jump was a double is estimated from your time in the air, and how it works shows every threshold.
Not sure this is you? Film 10–30 seconds of skipping and dulike will check — along with the other faults it can see, and the one to fix first.