Vaughn saidWho actually does this and how well does it work for you? What do you eat for both parts?
If one's going to make the effort to work out with the intent of gaining muscle, I recommend making the additional effort to gain lean muscle mass so as not to have to cut later. Learn (from experience) how much you need to eat (5-6 small meals throughout the day) and drink plenty of water. The largest meal after waking up is of basic importance in getting the metabolism revved-up to begin the day (protein, carbs, veggies). Less carbs then none at the final meal of the day. Also eating simple (quickly digestable) carbs, and protein, immediately after a workout. A casein shake is great before bedtime as its' protein is digested slowly during sleep, instead of cannibalizing body muscle.
Eat clean and healthy (avoid fried, sugary, and fatty foods). Make your workout and meals as productive as possible- 'do it right' the first time to prevent wasting efforts in cutting later.