I’ve noticed a few comments above that highlight overtraining, and that can certainly be an impetus to change methodologies.
My original comment, however, goes in a somewhat different direction than yours,
@Aikman56.
I started out high-volume—six days a week, including a period of training twice a day when my only goal at 20 was to turn pro.
Obviously, I couldn’t keep that up and still have a real life. After I gave up on pro aspirations, I cut back to five days a week, then eventually four, with single sessions.
I maintained that schedule while staying around 212–220 lbs, content to hold steady.
When I competed again in 1997, I ramped back up to five days a week with more volume in pursuit of progression. It worked well enough, and I was satisfied with the results.
After moving to Japan and finding PM in 2008, I also discovered Dante and DC training. It immediately appealed to me, especially since I’d been interested in Mentzer’s writings when I was younger. My asthma also makes long sessions miserable, so shorter, more intense training fits me better. At 20 I used to knock out 12 sets of squats on leg day - those days are long gone.
When I decided to compete again in 2018, I had already been training DC for a few years, but I cranked it into high gear and made significant progress, despite being in my late 40s. Now, at nearly 56, I still train this way and continue to find it incredibly effective. For me, it strikes the balance between load and recovery that allows me to keep progressing, as much as is realistic at my age.
All that said, I recognize that high-intensity, shorter workouts don’t suit everyone. Some people find them boring, some feel they’re not doing enough, and for others it can easily lead to overtraining.
What
@traininsane11 shared from Harris resonates with me—except for the emphasis on sarcoplasmic hypertrophy. Probably heresy to say it, but I don’t see solid evidence it exists. We get a pump, sure, but that’s temporary fluid engorgement, and it dissipates. I don’t see a biological reason why the capacity to store fluid would meaningfully outstrip the contractile tissue it’s meant to support. For lasting fullness on stage, I’ve gotten far more from increased glycogen storage thanks to PEDs and improved muscular efficiency and nutrient uptake.
TL;DR: I started out high-volume, ended up with HIT, and made some of my best gains in my late 40s. The key for me has been balance.