Looking for a natural way to protect the body against the effects of stress? Perhaps you should try ashwagandha, a shrub that modifies cortisol levels and can have a balancing effect on glutamate, an excitatory neurotransmitter in the brain. What this all means is that it helps to keep you calm and relaxed, as long as helping with insomnia and chronic fatigue. Here’s where and how to bring ashwaganda into your diet.