Jump rope: the cardio that fits in your bag
Ten minutes is enough for a real workout. Why the jump rope deserves a spot in your week, and how to use it.

Getting the rope under your feet twice in one jump. The setup and drills that unlock the movement.
A double under is a jump where the rope passes under your feet twice. It shows up in plenty of WODs, and almost everyone finds it frustrating at first. The good news: it's mostly about rhythm.
Stand on the middle of the rope: the handles should reach roughly your armpits. A rope that's too long slows everything down. A thin, fast rope helps a lot.
Don't grind until you're exhausted. A few minutes of practice at the start of a session, several times a week, beats one long frustrating session. Volta has jump rope workouts to get started and improve.
Ten minutes is enough for a real workout. Why the jump rope deserves a spot in your week, and how to use it.
Warm-up, drills, main set, cool-down: the structure that turns laps into real training.
Endurance, tempo, intervals: three types of session are enough to get faster on the bike, indoors or out.