Competitive eating comes down to if you are willing to indulge in a possibly unsafe lifestyle. You can make a title and a profit for yourself while competitively eating, but you are also shoving a LOT of food down your gullet. In order to stay healthy, you may need to consult a nutritional doctor which would cost a lot, and exercise a lot. Competitive eating is worth the risk if you are willing to put effort into maintaining your health, and it is a road you want to go down.
