A trainer who has spent decades coaching men over 50 says the secret to still building muscle isn’t lifting heavier every year — it’s lifting smarter.
Quick Take
- Trainer John Krahn, featured in Men’s Health, shares four strategies he uses to keep adding muscle past age 50.
- His toolkit includes machine-based lifts, swapping out painful exercises, sled pushes, and daily walking.
- Research backs the core idea: older adults can still build real strength and muscle size through resistance training.
- Experts stress that programs should be tailored to each person’s joints, health history, and pain tolerance.
A Trainer’s Playbook for Aging Muscles
John Krahn didn’t quit chasing muscle when he passed 50. He changed how he chases it. Men’s Health profiled his approach, built around four habits: using machines over free weights when joints complain, swapping painful moves for pain-free ones, warming up with sled pushes, and walking every single day, even on rest days.
Krahn puts it simply. “I don’t lift weights every day, but I walk every day,” he told the magazine. When his schedule collapses to just 15 minutes, walking becomes his fallback plan instead of skipping movement altogether.
Why Machines Make Sense After 50
Krahn leans on machines partly because they take some of the guesswork and joint strain out of lifting. That instinct lines up with research. A 2022 review found that heavy free-weight training can be rough on older adults with arthritis or other joint issues, since it often means higher compressive loads on already-stressed joints.
Machines aren’t a downgrade, either. A 2024 study found that straightforward, machine-based resistance training delivered real gains in both strength and everyday function for older adults.
That said, machines aren’t automatically superior to barbells and dumbbells for packing on muscle. A 2023 review of multiple studies found no meaningful difference in muscle growth between machine and free-weight training when the work was matched in intensity. The real advantage of machines may be that older lifters can actually keep doing them without pain, which matters more than which tool sits on the label.
Swapping Out Pain, Not Giving Up
Krahn’s second habit, replacing a painful exercise with a tolerable one, mirrors official guidance for older lifters. The National Strength and Conditioning Association’s position statement calls for individualized programs that account for joint stress, soreness, and pain tolerance rather than a one-size-fits-all routine. The article doesn’t spell out exactly how Krahn draws the line between normal muscle soreness and a red-flag pain signal, so anyone following this advice should still lean on common sense and, when needed, a doctor’s input.
The Case for Sled Pushes and Daily Steps
Sled pushes show up early in Krahn’s workouts, especially on upper-body days. He recommends two to three sets of 30-second pushes as a warm-up that gets the whole body firing before the main lifts begin. It’s a low-skill, joint-friendly way to raise heart rate and prime muscles without the technical risk of a heavy barbell lift.
Daily walking rounds out the plan. It won’t replace a weight session for building size, but it keeps the body moving, supports recovery, and builds the kind of consistency that matters more than any single workout. Showing up daily, even for a walk, beats skipping entirely when life gets busy.
The Bigger Picture on Muscle After 50
None of this works without the baseline fact research keeps confirming: older adults genuinely can grow muscle and strength through resistance training. A major 2020 review found a significant effect of resistance training on muscle size even in very elderly participants, concluding that age alone doesn’t shut the door on gains. Krahn’s specific combination hasn’t been tested head-to-head against other routines in a formal study, but it fits comfortably inside what the science already supports: consistent, joint-respecting, progressively loaded training beats chasing pain for the sake of pride.
For men and women over 50 still grinding at the gym, the takeaway isn’t complicated. Pick tools that let you train hard without wrecking your joints, keep moving on the days you don’t lift, and don’t confuse stubbornness with strength. Muscle doesn’t care whether it was built on a machine or a barbell. It cares whether you showed up consistently enough to earn it.
Building muscle later in life has always been less about finding a secret exercise and more about finding a routine a person can actually sustain for years, not weeks.
Sources:
menshealth.com, link.springer.com, pmc.ncbi.nlm.nih.gov, scindeks-clanci.ceon.rs
