I usually do 6 sets of bicep curls - 60 reps, then 55, 50, 45, 40 and then 35.
I recently realised that I was probably doing it wrong as biceps respond more to higher weights and lower reps, so I decided to switch it up a bit. I do for 3 sets for endurance (60 curls, then 55, then 50, same as before) - but for the second set of 3 I add as many weight plates as I can in order to do higher weights and less reps. However, I can still manage 30, then 25, and then 20 before failure. I can’t make my dumbells heavier. According to what I looked up on the internet, I should be doing more like 8-12 reps, and now I’m worried I won’t see growth doing the higher number that I currently do. Is there anything I can do to make bicep curls harder, or an alternative exercise that hits the biceps harder? Any advice would be appreciated.
I seriously doubt if you are going to see much growth, if any, using that little resistance. You’d be better off using a set of bands which you could get for around $20.
There’s a lot of curls to search out. Try concentration curls, or zottman curls. If you have a bench try incline curls or spider curls. Stick your elbows way behind you and do dumbbell drag curls. Lean forward and try Arnold Curls. If nobody is looking do waiter curls.
Actually, I bought and installed a chin up/pull up bar 4 days ago! Only used it once but it seemed more than sturdy enough to hold my weight as I’m not a big guy at all.
My thoughts are that you shouldn’t waste your time doing dumbbell curls for that kind of rep range, and focus on the calisthenics if you can’t get access to more weight.