P/S/A: exercise can not make you healthy if your diet is poor.
If your diet is micronutrient poor because you are living off prepackaged or fast foods, milk (whole), bananas, and orange juice is a good/cheap/easy place to start. Replace sugar water/other empty carb sources with these.
Hmm. I used to drink orange juice but I stopped because I was concerned that it was too much sugar and not enough fiber or something relative to eating fruit. Would you recommend drinking orange juice over, say, eating oranges?
P/S/A: There are single sentences which can create life-changing amounts of difference.