Today when I trained my biceps my reps were all over the place, normal ez bar curls were fine, but then on cable preacher curls and reverse curls my reps were all over the place, first set on preacher curls I only reached like 6 reps (I hit 9 on last session) and then on the second set I could crank out like five as easily as possible like I could've done more reps last set even tho Im pretty sure I reached failure, and sorta the same thing for reverse curls, but this time first set I hit like idk 6-7 reps and then on the second like 11 bruh, it might be cause I haven't slept well, eaten enough or just because I did the workout quite late unlike I usually do, I'm gonna see if I can reach 12 reps on reverse and normal curls and hit 11 reps on preacher curls next pull session, tell me if this has happened to you guys before