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Arm accessory

Skullcrusher

Trains triceps first — focused, direct, nothing hidden in the movement.

Muscle contribution per set

Triceps1

These are the weights Forge'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

3down
0pause
2up
0squeeze

Tricep extension with tempo; slow eccentric maximises long-head stretch and tension.

Elbows point up/stay close to head; full extension without locking harshly.

Derived from tempo research on this movement class — Wilk M, Zając A, Tufano JJ.

How Forge progresses it

Progresses by load in +0.5kg steps — small muscles, small increments, long patience.

Swap it for

Same movement pattern, same progression continuity — these are the alternatives the app offers mid-session when a rack is taken or equipment isn't there.

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