Look at my POV, a person who watches sports regularly, keeps up to date with it's all happenings, and makes bets according to his knowledge, and he is overall successful with his bets — to his own mind he does not feel like it's a work, his so called 'home work' as many would call it, just comes from the fact that he's passionate about sports and what he earns from betting is an extra income (i.e, passive).