I plan my intake around the times of right before and after I workout. I also take amino energy which is kind of like a pre workout and contains caffeine to give me a boost. You could also try coffee! Just not too much. And then I also put a scoop of monosodium phosphate in with the amino energy. Right before I get on the machine I take two glucose tabs to be safe (if feeling especially low) and during my workout I use Powerade zero to get electrolytes. Sometimes I add an emergen-c to the Powerade for extra vitamin c and b vitamins.

I know the feeling... I'm sorry!

 

Make sure to get some kind of energy. Usually I'll have 80 cals worth of oatmeal with a caffeine pill to hold me over my workout. Drink lots of water or electrolytes(anything but water will make me sick during workout) and if I'm famished after, I'll make a 100cal fruit smoothie. Just some ideas.(if the intake of any food worries you , then add more to your workout. For example, I'll usually burn 200 added to 1000 b/c of my smoothie and oatmeal)

 

I wouldn't do it if I were you fasting is extreme enough on it's own . If you workout when you fast it's incredibly dangerous x