I got new sport challenge! Last time i did 85 repeats for my strong biceps! But i am so much strong and powerful ! Now 5 kg per 1 hand and 100+ times non stop repeats for My biceps! I did not lower thedumbbells onthe floor even once during the all repeats! That was very hard! I screamed very loudly! Pushing them hard and getting sweat! My hands were numb and trembling! But i did it and pump my strong biceps!