Your arms are weak. Much weaker than mine. Not only weaker, but smaller too! Lets make this challenge: all you need is a measure tape and a pair of dumbbells. The heaviest you got! I use a pair of 8 kg dumbbells! I show how you must flex your arms and we compare! We measure our biceps and I show how I can make them bigger with the dumbbells! You try to copy me, but you fail! My biceps always win! You stay my weak shrimp forever!