I got new sport challenge! Last time i did 85  repeats for my strong biceps! But i am soo much strong and powerfull ! Now  5 kg per 1 hand and 100+ times non stop repeats for My biceps! I did not lower the dumbbells on the floor even once during the all repeats! Thats 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!