The short version, if you’re skimming: Six habits were wrecking my recovery: sleep, protein, junk volume, maxing out every set, cold plunges straight after lifting, and daily ibuprofen. The seventh thing was hormonal, and I’ll get to why it matters less than the internet claims.
If you’re over 40 and sore for days after a workout, you’ve almost certainly been told what I was told: that’s just what happens now.
I believed it for about two years. Tuesday legs, walking like a rented mule until Friday. Bench on Monday, shoulders barking until Wednesday. And every time, the same explanation:
“Man, you’re 48. This is just what it is now.”
So I spent money on recovery instead. A massage gun arrived and I used it exactly three times, mostly while watching TV, mostly on my calves.
Then I read a 2025 meta-analysis that made me feel stupid.
What the research actually says
Fernandes and colleagues https://doi.org/10.1123/japa.2024-0165 pooled 36 studies where older and younger adults did muscle-damaging exercise, then measured how much strength they lost and how fast it came back.
Muscle function loss at 24 hours, at 72 hours, and at the worst point showed no significant difference between age groups (effect sizes −0.16 to −0.35). On soreness, the older group came out lower at every comparison (effect sizes −0.34 to −0.62). The soreness gap was small-to-moderate in size.
So the data says being older doesn’t mean being sorer. Meanwhile I was wrecked for three days.
Sidenote, because someone will ask: None of this means nothing changes after 40. Sarcopenia is real. Muscle mass drops roughly 3–8% per decade after 30, tendons stiffen, joints complain. What the data actually shows is narrower than the internet claims: acute recovery from a single session holds up better than anyone thinks, and the things that break it are mostly fixable.
I was sleeping five and a half hours and calling it seven
I’d get into bed at 11:30, scroll until 12:15, wake at 5:45 when the dog did.
Short sleep is consistently linked to reduced muscle protein synthesis and slower repair. One bad night won’t ruin you. The accumulated five-and-a-half-hour average, night after night for years, will.
I didn’t add sleep. I removed the scroll. Bed at 10:45, phone charging in the kitchen. Six weeks in, my leg soreness dropped from three days to about thirty hours.
My protein was embarrassing.
I was eating maybe 90 grams a day at 195 pounds. That’s maintenance-ish for a sedentary person and starvation rations for someone lifting five days a week.
Roughly 1.6 g/kg is where the average person stops getting much extra benefit, and up to about 2.2 g/kg is considered reasonable. For me that’s 140 to 190 grams. Older lifters probably want the higher end, because anabolic resistance means the muscle needs more protein to produce the same response, though most of that evidence comes from adults over 60 rather than 48.
Eggs at breakfast. Greek yogurt. A real protein source at lunch. It’s boring and it works.
I was training like I was 28, then resting like I was 78.
The meta-analysis compares recovery capacity. It doesn’t control for how hard you train. I was doing 5-day splits with drop sets on everything. My 25-year-old self could absorb that. My 48-year-old body could too, for about three weeks, then it couldn’t.
So I added rest days. Nothing changed. What helped was cutting six exercises down to two, keeping the sets hard but stopping a rep or two short, and resting longer between them. Three sets of squats one or two reps short of failure buy you most of the same stimulus as six sets of squats plus four of leg press plus three of extensions.
Every session was a max-out.
I finished every set at failure. By Thursday my squat was 40 pounds under Monday’s, and I called that progress.
Leave one or two reps in the tank on most sets. Save the true grind for the last set of the main lift.
I was doing cold plunges right after llifting.
My gym installed a plunge tub. I was in it four times a week, ten minutes, immediately post-session. Felt amazing.
Turns out it’s a trade. Cold water right after resistance training blunts some of the hypertrophy signaling. Fine if your goal is feeling good and being ready tomorrow, bad if your goal is getting bigger and stronger.
Fix: keep the plunge, move it to rest days or a few hours later. If you lift in the evening and plunge in the morning, you’re fine.
I was taking ibuprofen like candy.
Two before every session for years. It became a habit.
High-dose ibuprofen around training appears to blunt some of the adaptive response, because you’re suppressing the inflammation that partly drives the adaptation. A couple of tablets here and there is fine. Daily for months is not free: regular use carries stomach, kidney and blood-pressure risk, so it shouldn’t be on autopilot.
And yes, the hormonal piece is real, just smaller than the internet says.
Testosterone drops about 1% a year after 30. Over a decade that’s meaningful. It affects energy, drive, and how much you want to be in the gym at all.I didn’t go near TRT for a long time. Needles, prescriptions, a lifetime commitment, and I wasn’t sure I qualified. What I did instead was fix the boring inputs, then go and look at the number.
Total T went from 412 to 508 ng/dL across seven months, with no medication. One blood draw at each end, so read it as a direction rather than a precise figure.
What the soreness actually was.
Once the inputs were fixed, my recovery came back to roughly where it was at 35. Same body, same gym, different habits. I’d been blaming age for things I could change.I still get sore. I’m 48, and after a heavy leg day I feel it. But it’s a day of soreness, not a week of dread, and that difference decides whether you train four times a week or twice.
Frequently Ask Questions.
Do you really need more rest days after 40?
Not automatically. Evidence says acute recovery capacity holds up. If you need more rest, the cause is usually volume, sleep, or protein, so fix those before cutting frequency.
How long should a 45-year-old rest between sets?
Longer than you think, if you’re lifting heavy: 2–3 minutes on compound work. You want the next set to be a real set.
Does soreness mean the workout worked?
No. It means you did something unfamiliar. It stops being a useful signal after the first couple of months.
At what age should you stop lifting heavy?
There isn’t one. Lifters in their 70s and 80s add strength. Heavy is relative to you.
Is it worth testing testosterone?
Yes, before you guess. Morning total T, free T, SHBG. Know the number, then decide.
What’s the biggest lever?
Sleep is one of the biggest, and the one most of us actually control.
Reference: Fernandes, J. F. T., Wilson, L. J., Dingley, A. F., Hearn, A. N., Johnson, K. O., Hicks, K. M., Twist, C., & Hayes, L. D. (2025). Advancing age is not associated with greater exercise-induced muscle damage: A systematic review, meta-analysis, and meta-regression. Journal of Aging and Physical Activity, 1–19. https://doi.org/10.1123/japa.2024-0165 https://doi.org/10.1123/japa.2024-0165
About the author. Rayan, 48, Los Angeles. Lifting since 19, self-taught, no certification to hide behind. Eight years of my own training logs and bloodwork behind what’s on this site. [More about me and why this site exists. about-me.
Published: November 3, 2026 · Last updated: November 3, 2026
Not medical advice. Talk to a doctor before starting medication or interpreting bloodwork.