When I was younger ( 14-24) and wanted to gain muscular bodyweight, I did the following eating plan over a 72 hour period.
First, I would stock up the fridge on quality proten items such as soft boiled eggs, chicken breasts, swiss cheese, sirloin burgers, and would put all of this in a large tupperware container in the fridge and during the day would snack out of it, at least every hour would eat 2 eggs, or one of the meat items and then at night, would get up and eat as well.
In addition, would eat regular meals, usually big salads and tons of fresh vegetables and maybe some brown rice.
I would also take a high fiber supplement as well.
This worked especially well when I had been training real hard for the previous 4-6 weeks and had hit a plateau.
(This worked especially way over three day weekends, such as Memorial Day approaching soon)
The results, I always achieved incredible solid muscle and strength gains in the weeks following this eating plan.
Keith W.