[etripe]

Five hours a week is no small investment. Focusing on calories/kJ in < out is much easier as it can be done incrementally, such as by not eating past a certain time of day, leaving out especially high sugar snacks, etc. There is no getting around obesity being a dietary issue.

That said, it's definitely not an either/or situation.

[rolisz]

GPs point is that exercise can help with those things: if you feel less hungry (because of leptin), you fill eat less calories or fewer snacks (or healthier ones).