Tonnage

Tonnage is the sum of reps × load across every working set in a session, regardless of exercise. If you squat 5×5×140 kg and bench 5×5×100 kg, session tonnage = (25×140) + (25×100) = 3,500 + 2,500 = 6,000 kg.

Tonnage is the same arithmetic as training-volume-load but applied at the whole- session scope rather than per muscle or per movement. It is useful as a single daily workload number to watch for big week-to-week swings (e.g. confirming a deload actually reduced load — see deload-weeks), but it is too aggregated to guide hypertrophy because it blends unlike movements and loads.

Caveats:

• It rewards heavy compound lifts disproportionately, so total tonnage can rise even when a lagging muscle's stimulus falls. Use per-muscle volume load for that (see training-volume-load).
• Like volume load, tonnage ignores effort and rep speed.
• Bodyweight-loaded movements (pull-ups, dips) need bodyweight added to external load to be counted honestly.

• Tonnage = Σ(reps × load) across all working sets in a session.
• Same formula as volume load, broader scope (whole workout).
• Good for spotting session-to-session workload swings and confirming deloads.
• Too aggregated for per-muscle programming; ignores effort.
• Add bodyweight to external load for weighted-bodyweight movements.

• training-volume-load — the per-muscle/per-movement version.
• deload-weeks — tonnage drop is a quick deload sanity check.
• what-to-log-strength — the raw fields tonnage is computed from.