Uploaded August 2025 | Updated September 2026, 2 weeks ago
Over 40? Grab my free 6-week program, MASS-40: projecthypertrophy.com/mass-40-workout-optin
Most guys hit 40, and suddenly it feels like everything that used to work stops working.
You’re training hard and you’re eating right, but somehow, the muscle just isn’t showing up like it used to.
And the truth is: that part actually does make sense. Because whether you realize it or not, your body has changed.
Testosterone isn’t as high as it used to be. Your muscles aren’t responding to protein or training the way they once did. And small mistakes you used to get away with are now costing you real progress.
But here’s the good news: Building muscle after 40 is 100% possible.
In fact, there are plenty of studies showing that you can build just as much muscle in your 40s as you did in your 20s.
In this video, we’re going to break down exactly why muscle growth feels harder as you get older... and more importantly, the specific changes you need to make to start seeing real results again.
[MASS 40] FREE WORKOUT FOR MEN OVER 40
➜ projecthypertrophy.com/mass-40-workout-optin
[SHRED 40] FREE FAT LOSS PROGRAM FOR MEN OVER 40
➜ projecthypertrophy.com/shred-40-optin
[COACHING] APPLY FOR OUR 1-ON-1 COACHING PROGRAM
➜ checkout.musclemonsters.com/sculpted-muscle-after-40-coaching
[MASS-5 FULL BODY] HIGH-FREQUENCY FULL BODY WORKOUT
➜ musclemonsters.com/products/mass-5-body-workout
FOLLOW US ON INSTAGRAM:
➜ instagram.com/musclemonsters
References:
onlinelibrary.wiley.com/doi/full/10.2164/jandrol.112.017160
journals.lww.com/nsca-jscr/fulltext/2009/05000/early_phase_adaptations_to_a_split_body,_linear.35.aspx
tandfonline.com/doi/abs/10.3810/psm.2011.09.1933
academic.oup.com/biomedgerontology/article/67/11/1170/604729
ncbi.nlm.nih.gov/pmc/articles/PMC2995836
sciencedirect.com/science/article/pii/S2095254621000077#bib0014
pubmed.ncbi.nlm.nih.gov/2917954
pubmed.ncbi.nlm.nih.gov/21058750
pubmed.ncbi.nlm.nih.gov/12670837
pubmed.ncbi.nlm.nih.gov/30225799
jamanetwork.com/journals/jama/fullarticle/1029127
pmc.ncbi.nlm.nih.gov/articles/PMC7785053
link.springer.com/article/10.1007/s40279-022-01706-y
sciencedirect.com/science/article/abs/pii/S0306987711001800
ncbi.nlm.nih.gov/pmc/articles/PMC4633096
frontiersin.org/journals/nutrition/articles/10.3389/fnut.2021.615849
journals.physiology.org/doi/full/10.1152/ajpendo.00517.2011
cdnsciencepub.com/doi/10.1139/apnm-2012-0092
pubmed.ncbi.nlm.nih.gov/30722014
pmc.ncbi.nlm.nih.gov/articles/PMC9903079
jissn.biomedcentral.com/articles/10.1186/s12970-017-0173-z
pmc.ncbi.nlm.nih.gov/articles/PMC9903079
pmc.ncbi.nlm.nih.gov/articles/PMC7071499
pmc.ncbi.nlm.nih.gov/articles/PMC10768611
ncbi.nlm.nih.gov/pmc/articles/PMC4658772
ncbi.nlm.nih.gov/pmc/articles/PMC9415500
pubmed.ncbi.nlm.nih.gov/36017529
sciencedirect.com/science/article/abs/pii/S0731708508005955
journals.lww.com/nsca-jscr/Fulltext/2016/10000/Acute_Resistance_Exercise_Performance_Is.1.aspx
pubmed.ncbi.nlm.nih.gov/22002517
ncbi.nlm.nih.gov/pmc/articles/PMC5592291
tandfonline.com/doi/abs/10.3810/psm.2011.09.1933
Disclaimer: The content on this channel is for informational and entertainment purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider before starting any new fitness program, diet, or supplement regimen. Results may vary. Use of this information is at your own risk.
Over 40? Grab my free 6-week program, MASS-40: projecthypertrophy.com/mass-40-workout-optin
Most guys hit 40, and suddenly it feels like everything that used to work stops working.
You’re training hard and you’re eating right, but somehow, the muscle just isn’t showing up like it used to.
And the truth is: that part actually does make sense. Because whether you realize it or not, your body has changed.
Testosterone isn’t as high as it used to be. Your muscles aren’t responding to protein or training the way they once did. And small mistakes you used to get away with are now costing you real progress.
But here’s the good news: Building muscle after 40 is 100% possible.
In fact, there are plenty of studies showing that you can build just as much muscle in your 40s as you did in your 20s.
In this video, we’re going to break down exactly why muscle growth feels harder as you get older... and more importantly, the specific changes you need to make to start seeing real results again.
[MASS 40] FREE WORKOUT FOR MEN OVER 40
➜ projecthypertrophy.com/mass-40-workout-optin
[SHRED 40] FREE FAT LOSS PROGRAM FOR MEN OVER 40
➜ projecthypertrophy.com/shred-40-optin
[COACHING] APPLY FOR OUR 1-ON-1 COACHING PROGRAM
➜ checkout.musclemonsters.com/sculpted-muscle-after-40-coaching
[MASS-5 FULL BODY] HIGH-FREQUENCY FULL BODY WORKOUT
➜ musclemonsters.com/products/mass-5-body-workout
FOLLOW US ON INSTAGRAM:
➜ instagram.com/musclemonsters
References:
onlinelibrary.wiley.com/doi/full/10.2164/jandrol.112.017160
journals.lww.com/nsca-jscr/fulltext/2009/05000/early_phase_adaptations_to_a_split_body,_linear.35.aspx
tandfonline.com/doi/abs/10.3810/psm.2011.09.1933
academic.oup.com/biomedgerontology/article/67/11/1170/604729
ncbi.nlm.nih.gov/pmc/articles/PMC2995836
sciencedirect.com/science/article/pii/S2095254621000077#bib0014
pubmed.ncbi.nlm.nih.gov/2917954
pubmed.ncbi.nlm.nih.gov/21058750
pubmed.ncbi.nlm.nih.gov/12670837
pubmed.ncbi.nlm.nih.gov/30225799
jamanetwork.com/journals/jama/fullarticle/1029127
pmc.ncbi.nlm.nih.gov/articles/PMC7785053
link.springer.com/article/10.1007/s40279-022-01706-y
sciencedirect.com/science/article/abs/pii/S0306987711001800
ncbi.nlm.nih.gov/pmc/articles/PMC4633096
frontiersin.org/journals/nutrition/articles/10.3389/fnut.2021.615849
journals.physiology.org/doi/full/10.1152/ajpendo.00517.2011
cdnsciencepub.com/doi/10.1139/apnm-2012-0092
pubmed.ncbi.nlm.nih.gov/30722014
pmc.ncbi.nlm.nih.gov/articles/PMC9903079
jissn.biomedcentral.com/articles/10.1186/s12970-017-0173-z
pmc.ncbi.nlm.nih.gov/articles/PMC9903079
pmc.ncbi.nlm.nih.gov/articles/PMC7071499
pmc.ncbi.nlm.nih.gov/articles/PMC10768611
ncbi.nlm.nih.gov/pmc/articles/PMC4658772
ncbi.nlm.nih.gov/pmc/articles/PMC9415500
pubmed.ncbi.nlm.nih.gov/36017529
sciencedirect.com/science/article/abs/pii/S0731708508005955
journals.lww.com/nsca-jscr/Fulltext/2016/10000/Acute_Resistance_Exercise_Performance_Is.1.aspx
pubmed.ncbi.nlm.nih.gov/22002517
ncbi.nlm.nih.gov/pmc/articles/PMC5592291
tandfonline.com/doi/abs/10.3810/psm.2011.09.1933
Disclaimer: The content on this channel is for informational and entertainment purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider before starting any new fitness program, diet, or supplement regimen. Results may vary. Use of this information is at your own risk.
