Full mechanism, in text

How the body rebuilds stronger

1 · Selye's general adaptation

Any stressor triggers a three-phase response of alarm, resistance and exhaustion, and training should stay in the resistance phase so the body adapts and gets stronger in recovery.Hans Selye 1956 *The Stress of Life* proposed the general adaptation syndrome (GAS): any stressor (training / illness / starvation / psychological) triggers a three-phase response:

· Alarm — immediate stimulus, resource mobilisation
· Resistance — the body adapts to the stressor, performance maintained under stress
· Exhaustion — chronic overload, system collapse

Training application: one session = one stressor. Training damages the body, but the body adapts + gets stronger during recovery. The key is keeping training volume in the resistance phase, not reaching exhaustion.

This is the physiological root of the word adaptation — not getting stronger but ↑ capacity to handle future similar stressors.

2 · Train → trough → bounce

After one session performance first drops to a trough, bounces back to baseline within 24-72h, and exceeds baseline at 72-96h, which is supercompensation.Performance curve after a single session:

· During training: performance temporarily drops (fatigue) — strength / reaction time short-term ↓
· 24-48h after training: performance is at the trough — + neural fatigue period
· 24-72h recovery: performance bounces back to baseline
· 72-96h supercompensation: performance exceeds baseline — this is the getting stronger moment
· 96h+ decay: without further training, the adaptation slowly fades

Why down before up: the body doesn't pre-adapt — it only synthesises new structure in response to actual damage signals. No damage, no adaptation. This is why easy training + never challenge yourself = no progress.

3 · The window — when to train next

Ideal timing for the next session = the supercompensation peak.After strength training:
· Nervous system: 24-48h recovery
· Muscle damage: 24-72h repair
· Total recovery → same muscle group: 48-72h later is optimal

This is the physiological basis of the each muscle group 2-3×/week frequency.

Too early (< 48h): still at the trough, performance unrecovered, neural fatigue accumulates → long-term it's chronic fatigue, not supercompensation

Too late (> 96h): missed the peak window → decay begins, adaptation lost

Full body 3×/week (each muscle 3 times) = compact frequency, high beginner ROI
Push-Pull-Legs 6×/week (each muscle 2 times) = spread interval, advanced option
Each muscle 1×/week = sparse, slower progress but still workable

4 · Stacking + deload reset

Each session hits the previous peak window so supercompensation stacks and the baseline climbs, and after 4-8 weeks a deload week clears the cumulative fatigue.A single supercompensation is temporary: stop training and it returns to baseline.

Long-term strength gain = continuous supercompensation stacking:
· Each session hits the previous one's peak window
· Performance baseline slowly climbs — this is the multi-month getting stronger / bigger process

But cumulative fatigue is real:
· Each peak window is small, but subclinical fatigue (neural + endocrine + psychological) slowly accumulates
· After 4-8 weeks it approaches the exhaustion phase — even if every session can be completed, overall decline signs appear ( ↓, irritability, poor sleep)

Deload week (see recovery-science):
· Reduce volume / intensity for 1 week → cumulative fatigue cleared
· The whole curve resets to a higher baseline
· Then the next 4-8 week mesocycle can stack supercompensation again

This is why never deload = slow failure, while regular deload = long-term maximum progress.

Full mechanism, in text

1 · Selye's general adaptation

2 · Train → trough → bounce

3 · The window — when to train next

4 · Stacking + deload reset

Supercompensation — 4-step training curve

Full mechanism, in text

1 · Selye's general adaptation

2 · Train → trough → bounce

3 · The window — when to train next

4 · Stacking + deload reset

Supercompensation — 4-step training curve