22 reasons why guys our age should stay away from training to failure:
1. No strength advantage when volume is matched (failure vs. non-failure are similar).
https://pmc.ncbi.nlm.nih.gov/articles/PMC9068575/ (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/26666744/ (Opens in a new window)2. Hypertrophy is similar when volume is matched; any edge for failure is small and mainly with very light loads.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9068575/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC9935748/ (Opens in a new window)3. Failure sessions produce more acute fatigue, muscle damage, and higher perceived effort - worse next-session readiness.
https://pubmed.ncbi.nlm.nih.gov/34881412/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC11057610/ (Opens in a new window)4. Non-failure lets you train more often (frequency) and accumulate productive volume - key for hypertrophy over 40.
https://pubmed.ncbi.nlm.nih.gov/27102172/ (Opens in a new window)5. Lower “velocity loss” (i.e., stop sets before grinding) preserves power / velocity while still improving strength.
https://pubmed.ncbi.nlm.nih.gov/27038416/ (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/32049887/ (Opens in a new window)6. Chasing high fatigue (big velocity loss) isn’t needed for strength and can blunt neuromuscular adaptations.
https://pubmed.ncbi.nlm.nih.gov/32049887/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC9807551/ (Opens in a new window)7. Near-failure grinding spikes blood pressure dramatically - extra caution for men 40+.
https://pubmed.ncbi.nlm.nih.gov/3980383/ (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/2632751/ (Opens in a new window)8. If you have (or are at risk for) hypertension, sub-failure programming reduces exposure to peak BP while still benefiting resting BP long-term.
https://pmc.ncbi.nlm.nih.gov/articles/PMC2845767/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC4369613/ (Opens in a new window)9. Failure training can negatively alter anabolic / stress hormones unfavorably vs. non-failure (↓ IGF-1, less favorable Testosterone / Cortisol profile).
https://pubmed.ncbi.nlm.nih.gov/16410373/ (Opens in a new window)10. Mechanistically, high-fatigue sets increase AMP/IMP and activate AMPK - signals that transiently oppose mTOR-driven protein synthesis.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0040621 (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC10527431/ (Opens in a new window)11. Technique degrades under deep fatigue, increasing joint and spine loading “leak” - a sensible risk factor to avoid over 40.
https://pmc.ncbi.nlm.nih.gov/articles/PMC4096084/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC1633714/ (Opens in a new window)12. Failure raises acute muscle damage/DOMS without extra strength gains - needless recovery tax for busy masters athletes.
https://pubmed.ncbi.nlm.nih.gov/34881412/ (Opens in a new window)13. More damage can temporarily reduce insulin sensitivity for 24-48-hour making it more difficult to digest carbs - sub-failure mitigates that hit.
https://pubmed.ncbi.nlm.nih.gov/8865083/ (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/17887809/ (Opens in a new window)14. Over 40, recovery debt matters: older muscle often shows delayed or less efficient recovery - so avoiding failure preserves consistency.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10854791/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC10317890/ (Opens in a new window)15. Chronic high glucocorticoids preferentially atrophy fast-twitch fibers - another reason not to repeatedly chase failure-level stress.
https://pubmed.ncbi.nlm.nih.gov/23806868/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC3784879/ (Opens in a new window)16. Adherence wins: Non-failure sessions feel better (lower discomfort / RPE) with equal results - people stick with it.
https://pubmed.ncbi.nlm.nih.gov/30615007/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC8372906/ (Opens in a new window)17. For pure strength, heavier loads with reps in reserve beat constant failure; no need to “empty the tank.”
https://doi.org/10.1249/MSS.0000000000002585 (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/33555822/ (Opens in a new window)18. Failure tends to lengthen recovery windows - bad fit for high-frequency skill lifts common in 40+ programs. (Remember: Strength is a skill.)
https://pmc.ncbi.nlm.nih.gov/articles/PMC11057610/ (Opens in a new window)19. Managing fatigue (Velocity Stops) maintains bar speed - important for power, balance, and athleticism as you age.
https://pubmed.ncbi.nlm.nih.gov/27038416/ (Opens in a new window)https://pubmed.ncbi.nlm.nih.gov/32681665/ (Opens in a new window)20. Load-to-failure with very high reps (metabolic grind) isn’t necessary and can be rough on tendons / joints - especially shoulders/knees - when cumulative fatigue stacks.
https://pubmed.ncbi.nlm.nih.gov/32049887/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC9807551/ (Opens in a new window)21. Overreaching / overtraining risk climbs when you pile failure on top of life stress - especially in masters lifters.
https://pubmed.ncbi.nlm.nih.gov/9068095/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC3435910/ (Opens in a new window)22. Sleep: Evidence is mixed, but very hard sessions near bedtime can impair some sleep metrics - plan higher efforts earlier and keep a few reps in reserve at night.
https://pubmed.ncbi.nlm.nih.gov/33795917/ (Opens in a new window)https://pmc.ncbi.nlm.nih.gov/articles/PMC12000559/ (Opens in a new window)So, the #1 reason to train to failure?
Because you want to.
That’s it.