The library
Isolation

Bar Hang

Trains forearms first, with real work landing on lats, traps, core.

Muscle contribution per set

Forearms1
Lats.30
Traps.25
Core.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

Hold, don't count reps.

Isometric hold — prescribed by duration and grip quality, not rep tempo.

Dead hang from the bar, shoulders active not slack. Time the set.

Measured directly for this movement.

  • General isometric training literature — holds are prescribed by duration and bracing quality, not rep tempo.

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.