Quote (flussp @ May 6 2019 07:56pm)
I am going to assume you do not have much of a bodybuilding IQ.
40-45 lb. dumbbell curls is a decent amount of weight, especially if you are doing supinated curls and not hammer curls. It is not about how much weight you are moving, it is about how well you can isolate your biceps and get the best contraction. Lighten the weight up and focus on form (as mentioned above) and really contracting the bicep and muscle you are working. Try a 20-25 lb. dumbbell next training session and focus on contraction; biceps are a small muscle, they respond well with higher repetitions and really pumping the blood into the muscle. Also, try raising your pinky at the peak of each contraction with lighter weight and I promise you will get a better pump than just swinging around the 40-45 lb. dumbbells.
Edit: By raising pinky I do not mean off the dumbbell and in the air lol. Rotate your hand outwards at the peak of each contraction.
My form is actually very good but ty