Isn't that bad for your metabolism though? I thought that that best way to eat was to constantly be eating small amounts of food because that keeps your metabolism up.

There are also 'non-conventional' views on the aspect:

http://heartscanblog.blogspot.com/2009/11/grazing-is-for-cat...

Also, a decent article on the subject here: http://www.bodyrecomposition.com/research-review/meal-freque...