These things are fun.
Over the weekend or whenever you want, slap a 10 on each side of the barbell and try this out.
Do 6 sets of 12 reps of curls. You can only rest 60 seconds between sets. 60 SECONDS. No longer.
Keep the reps strict.
It's only 65 pounds for the love of God, don't turn it into cheat curls. And don't shorten the ROM. Full curls. From the bottom to the top. Again, it's only 65 pounds.
Report back to me how you did. No bullshit. I know it's the internet and people can make shit up, but show some stones and report back how you actually did, and what all you noticed.