Hi Folks! I have a bet with my coach. If get a sixpack before my birthday(25th July), he will wear a shirt from Djokovic(He is absolutely anti-Djoker!!) when we're playing doubles in a tournament. If not, I will probably wear a dress(kinda like Mahut). So, do you have tips to get a sixpack? How much exercises I have to do in a week? Going to buy a sixpack in the supermarket is not an option haha! Thanks in advance everyone!