The mineral Magnesium has a few major functions within the body. They include: strengthening your bones, helping with enzyme functions and also helping with nerve and heart function. The recommended daily requirement of magnesium for males is 350mg, while for females it is recommended that they consume at least 265mg of magnesium per day. Failure to do this can lead to complications such as; weakness, muscle pain and poor heart function. Foods that are great sources of magnesium are; wheat bran, green vegetables, nuts, legumes and chocolate.