The library
Isolation

Towel Face Pull

Trains rear delts first, with real work landing on traps, upper back, biceps.

Muscle contribution per set

Rear Delts1
Traps.35
Upper Back.30
Biceps.15

These are the weights Heatwayve's volume audit actually computes with — deliberately conservative, so compounds don't masquerade as full coverage. A 0.5 means a set counts as half a set for that muscle: meaningful help, not a replacement for direct work.

Tempo

2down
1pause
1up
1squeeze

Rear-delt work is an end-range hold movement; the pause at full retraction is the point, not the pull.

Towel round a door anchor; pull to the forehead, elbows high, hold a beat.

Derived from tempo research on this movement class.

How Heatwayve progresses it

Progresses by load in +0.5kg steps. Isolation work is where the honest-volume ledger pays off — compounds alone don't cover it.

Train with intention. Open Heatwayve — it prescribes the weight, watches the reps, and does this arithmetic for every set you log.