Exercise library

How to do the Cocoons

A beginner compound exercise using bodyweight, working the abdominals.

Primary musclesAbdominals
Secondary musclesNone recorded
EquipmentBodyweight
LevelBeginner
TypeCompound
ForcePull

Steps

  1. Begin by lying on your back on the ground. Your legs should be straight and your arms extended behind your head. This will be your starting position.
  2. To perform the movement, tuck the knees toward your chest, rotating your pelvis to lift your glutes from the floor. As you do so, flex the spine, bringing your arms back over your head to perform a simultaneous crunch motion.
  3. After a brief pause, return to the starting position.

Tracking it in OneRep

Add the cocoons to a routine and your previous weight and reps sit beside every set, so the decision to add load is made by what is already on the screen rather than by memory. Exercise history and volume trends are one tap away, and logging works offline for the gyms where signal does not reach.

Because OneRep tracks food on the same timeline, a stall on this lift can be read against what you were actually eating that month — which is the difference between a programming problem and an eating one. More on that in tracking progressive overload without a spreadsheet.

Where the instructions come from

The steps above come from free-exercise-db, a public-domain exercise dataset. They are general guidance, not coaching for your body: if a movement hurts, stop and get someone qualified to look at it.