You were not specific on the symptoms
you experience, but my guess is
that when you exercis
e you don't drink water, or you sweat to excess. This
will dehydrate you and you will lose salt and other minerals. You can experience shaking of the hands, vis
turbances, headaches, stomach aches, stitches in the sides, exhaustion, low grade temps and other unpleasant symptoms. If this is
the case, try drinking a fluid that has minerals in it like Cytomax.