Do you constantly feel tired, experience muscle spasms, and notice your eyes twitching? If so, there’s a chance that your body is suffering from a magnesium deficiency. A magnesium deficiency can cause serious illness because too many processes in the body depend on it. That’s why you should stay alert and be able to spot a deficiency in time. So, what are some other symptoms of this condition and what can you do to feel better? Bright Side compiled a checklist of magnesium deficiency symptoms.