How to learn double unders with a jump rope
Getting the rope under your feet twice in one jump. The setup and drills that unlock the movement.

Warm-up, drills, main set, cool-down: the structure that turns laps into real training.
Swimming laps with no plan feels nice, but you won't improve much. A structured session works technique and endurance in the same time in the water.
In a 25 m pool, 100 m is 4 lengths. Count distance rather than lengths: it makes sessions easier to follow and compare.
Keep the same session for a few weeks and see whether the repeats feel easier or need less rest. Then add a repeat or shorten the recovery.
Volta has swim workouts written by distance, from technique to endurance, shown step by step with the rest counted down for you.
Getting the rope under your feet twice in one jump. The setup and drills that unlock the movement.
Ten minutes is enough for a real workout. Why the jump rope deserves a spot in your week, and how to use it.
Endurance, tempo, intervals: three types of session are enough to get faster on the bike, indoors or out.