Protocols.
Multi-week, defined-outcome interventions. Each has a baseline, a phase plan, exit criteria. Pick the one that matches your goal.

VO₂ max.
12 weeks. Norwegian 4×4 + Zone 2 base. +5–8 ml/kg/min for most starters.

Muscle growth.
12 weeks. Caloric surplus, progressive overload, protein floor, DEXA bookends.

Fat loss · aggressive.
12 weeks. GLP-1 ladder, protein floor, walking quota, offramp plan.

Fat loss · sustainable.
24 weeks. Smaller deficit, fewer side effects, the no-GLP-1 path.

Strength peak.
8 weeks. Linear → DUP → taper to a tested 1RM on the big three.

TRT restart.
16 weeks. Restore endogenous T after exogenous suppression.

HPA reset.
8 weeks. Sleep enforcement, training deload, cortisol curve retest.

Gut reset.
6 weeks. Elimination, fermented reintro, fiber ramp.

CV risk reduction.
24 weeks. ApoB-targeted intervention with stepped escalation.

Cognitive reset.
12 weeks. Sleep, light, fasted training, optional nootropics.
Recovery reset.
8 weeks. The parasympathetic reset that comes before anything else.