Surf up, no need to diet.
Surfies battle to get to where the waves are breaking; this is burning up heaps of calories. They paddle hard to catch a wave. Their glands are secreting hormones, endorphin directly into their veins giving them a high better than drugs. Drugs are like masturbation it feels good but not like the real thing.
This is the real thing, living in the moment, nothing else exists, and the mind is totally focused like when the bat connects with the ball or the few seconds before the parachute opens.
What exhilaration but the great feeling does not last and it is another struggle out for more of what they love. People can become addicted to physical exercise but most people are more likely to become couch potatoes, addicted to television.
No wonder you never see a fat surfie. They have mastered balance on their boards and in their food intake and energy expenditure.