Sorry dude, all that progress will be gone in less than a year. You have to keep doing it for the rest of your life.
Here, “I’m done” means done with the never-ending gains/mass chase, not done working out entirely.
That’s just not true lol. You’ll lose some strength/mass, but as long as nothing extreme happens to your diet or health, you’ll always be bigger than when you started.
It’ll also be easier to regain lost mass as your muscles will remember how big they used to be (yes, this is a thing), and will build back up quicker than someone who just started working out
It has always been true for me. 6-9 months later I look scrawny if I don’t keep lifting. I’ve lost 20 pounds of muscle in the last 10 months because life got in the way and I haven’t been hitting the weights. I think the biggest impact is that I have an incredibly high metabolism. Probably from playing soccer and running cross-country my entire youth. I also hike every single day. Because of that I have to force feed myself to gain. I stop force feeding myself when I stop lifting, which is probably why most of the atrophy happens.