SETUP: Grab two plates together. If the plates have gaps, make sure you’re pressing your hands into the solid part of the plate (makes your forearms work harder).
REP: Perform a biceps curl by keeping your elbows locked to your sides (like a T-Rex) and squeezing your biceps hard to curl the weights up to chest/shoulder level, then control the weight during the descent.
TIP: The benefit of using plates rather than dumbbells here is that your forearms are going to work double time, you’ll have to really crunch those plates hard to keep them together as you perform each rep. If your biceps reach muscle failure, just switch to performing bottom-half reps as this will continue to hit the forearms.