Most Helpful Guy
I would find an alternative to the candy if he's really into working out and eating healthy. If he deosnt care much about dieting however then the candy is a nice touch. I'd still add something else, like a video game or cologne just to top it off if it's within your budget, but otherwise it's definitely a nice practical gift.
Most Helpful Girl
I think that's a great idea! It shows you put a lot of thought into it and wanted to get him something related to his interests that he can actually use. I'm sure he'll love it. :)