KatnissandRue

I once was on a diet for months where was eating 1200 calories and less than 20 grams of fat a day, and working out for hours each day. I got seriously sick; I was fainting, my hair was falling out, my heart beat slowed...My nutritionist said I needed to be eating at least 1500 calories and 50 grams of healthy fat each…

I used to have that, and it was severe potassium deficiency. Eating a banana might not be enough--you might need a supplement and/or a blood test to check. You might also need to make sure you are thoroughly stretching before and after you work out.