Hello, My brother-in-law, would classify himself as a "hard gainer". I've tried recommending ways to up his caloric intake, but he's continued to find it difficult to hit his calorie goal since he coaches and plays sports daily. I suggested he begin drinking regular gatorade sports drinks, but he stated cane sugar impacts could lower the immune system. I would imagine this only holds true in a poor overall diet, not from a good diet with a few sports drinks per day. Could you please help provide insight on this topic? Thanks!