Instead of saying "no ****ing way," let's just go through an average day (no exams nearby) in M1 and I'll let you decide.
You have 4-6 lectures per day, each an hour (labs are ~2 hours so they count as two lectures). An easy topic will take you an additional hour outside of class to fully understand, a hard lecture will take you ~3 hours, let's be super conservative and say 1.5 hours for every hour in class. Let's also assume you go to a school without mandatory attendance (I don't), you never go to class, and you're proficient at watching lectures at 2x.
So, if it's a 5 lecture day, you'll have 2.5 hours of watching 2x lectures, and 7.5 hours of additional study time. To process effectively you'll need at least a 10-15 minute break for every hour of study time. That's a 12 hour day. You can push some of this work to the weekend, but the more you do that the less time you'll have to review the week's material to keep it fresh (if you don't review regularly, come exam time you'll be learning it all over again). At a minimum you'll also need to spend 10-15 minutes, per lecture, reviewing the slides for the next day. That's another hour. In order to focus properly and process anything (without prescription drugs), you'll also need at least 7 hours of sleep every night.
So, for everything else in your life, you've got 4 remaining hours. And this is not a busy week.
If I had to spend my ultra limited free time working, I'd be an incredibly depressed person (and probably a much worse student).