My friend is a track guy and he jogs every morning for about 40 minutes. He says his HR is usually steady at 160-170 BPM. He want to gain some mass but not get fat and was wondering how many calories he needs. I told him probably 3500 but I am not sure and needed more expert advice. He said he was pudgy most his life but not now so I am guessing he puts on fat easily but the every day cardio keeps it to a minimum. He is very nutritious and eats tons of good fats and some complex carbs also. I told him about dextorse after a workout and he does not believe me. Any help for my friend. What ever is put here I might print out to show him. He said he currently does not count calories but he thinks it is like 2400-2600 and he stays the same weight even with some cheating on Sunday.