The library
Isolation

Sliding Fly

Trains chest first, with real work landing on core, front delts, biceps.

Muscle contribution per set

Chest1
Core.35
Front Delts.30
Biceps.10

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

4down
0pause
2up
0squeeze

Long eccentric under an anti-extension demand — the same profile as an ab-wheel rollout with the chest as the prime mover.

Hands on towels, floor smooth; open only as far as you can close under control.

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.