is it better for dumbbell biceps curl:
- a high palm grip (such as that of deadlift)
- a bulldog low palm grip (such as that of bench press and overhead press)
- a traditional low palm grip
My opinion: bulldog grip is not necessary since our forearm is above the weight. But, I can't say which grip is better and why. A high palm grip is known to be the best one if you want to trap too much skin and have pain.