Recovery is hormonal. If you're doing the same training volume you've done for years and it's no longer landing, the upstream issue is usually anabolic hormone decline (T, IGF-1) or recovery infrastructure (sleep architecture, nutrient adequacy). All measurable.
GH pulses during slow-wave sleep build the recovery infrastructure. Low IGF-1 (especially under 150 ng/mL in adults) flattens recovery.
T is the primary anabolic hormone. Low T reduces protein synthesis rate and muscle repair capacity. Often the cause if strength is dropping.
Slow-wave sleep (deep sleep) is where most physical recovery happens. Reduced SWS, from cortisol, alcohol, age, or poor sleep, directly impairs recovery.
Subclinical deficiencies in any of these reduce energy delivery and recovery capacity.
Sometimes it's just training too much and recovering too little. A real assessment, not just a hormonal one.
If IGF-1 is suboptimal, GHRH-driven restoration directly improves slow-wave sleep and recovery hormone output.
See full details →Restoring T to optimal range restores recovery capacity and protein synthesis.
See full details →If you've ruled out the above, NAD+ subq supports cellular energy and mitochondrial recovery, particularly noticeable in active adults 40+.
See full details →Find My Protocol routes you to the right panel and the right physician for this symptom, in 5 minutes.