Quick workout tip for toned biceps!

  I really like the way my body looks, and I can say I have a nicely toned body. One thing didn't really like was my weak arms, and I have realized this 2 months ago, me and some of my friends were messing around, arm wrestling and I had the weakest arms! I came home and thought about it, looked for some weights at a local store and found nothing. Mum just told me to use 2l bottles of water. I seriously thought she was kidding me! But it turns out they are really great, and cost nothing.  I take one in each arm, and lift them one at a time. The key to getting the best out of your workout is to do a full motion,  make sure you strech thoese muscles really good. I do this nearly every day and I can see a Major improvement. I can now beat 5 girls at arm wrestling ( which I know sounds really stupid and childish.. :)) and you can already see a little bump on my arms when I flex them. I can say I am really pround of my too little bottles, just because they seem to be the best amount of weight! What's your fave workout tip?