i incorporate 2 mass gainer shakes per day in my diet.....i use Optimum Nutrition's Pro Complex Gainer, i mix it with skim milk,2 scoops of the pro complex gainer and 1 cup of oatmeal.I take it after my post workout meal,later in the afternoon and also again 2 hours after my supper....its the best gainer ive used,i just like its profile better,more of the calories comes from the proteins,rather than the carbs,thats why i add the oatmeal to mine,plus it doesnt have but 6g of sugar,and thats a plus for me,i like it better than any other gainer out there,it fits my program better