I've heard Vitamin B-12 can be good for boosting energy. I take a multi-vitamin every day for men 55+ in age, don't know if it helps but I figure it can't hurt. As for exercise, I think you just have to make up your mind to do it, then just do it. Once you get into a routine you can even look forward to it, it releases endorphins in your body and you feel good about it. Plus it just feels good to be doing something good for yourself. I do daily walks at a fast pace, try to push myself each day, and I always feel good when done, no matter if I'm tired from it. Getting started is the thing.....as Nike says just do it.