I have a couple supplement questions

first a little personal info. I’m 39 and have been somewhat active most of my life, running, biking, and various sports.

Just recently I got back into running after a 6 year hiatus to get into shape for hockey season. After just a few weeks of running (in the morning) I feel great while running but just want to nap for the rest of the afternoon. In the past i’ve always felt energetic all day after a good morning run. Very positive results from a recent physical and stress test rule out ticker and other health problems. Also i’m eating healthier at this point in my life than I ever have, no caffeine or high cholesterol and fatty foods. So i’m assuming there is a lack of an essential mineral, vitamin, amino acid, etc. Any supplement suggestions to bring my energy level up after a run?

Before answering that question read this one. I’m not taking any supplements now because the multivitamins i’ve tried in the past few years give me gas. Now i’ve been to a couple long established health food stores for multivitamin suggestions to avoid this irritant. Nobody can agree where the problem is occuring, the suggestions range from the binders used to make the tablets to certain vitamins or even minerals.

Thoughts?

Thanks in advance for your help and not asking me to contact you for more information about a particular product.