What are the advantages of massaging with magnesium gel? And why would you advise your client to take magnesium supplements? Doctor and scientist Richard Danel knows the answer to these questions: "It's a mineral that is literally vital for many functions in your body. For properly functioning muscles as well. And in the western world, more than 60 to 70 percent of people have a magnesium deficiency. If you solve that deficiency, it will reduce muscle aches, amongst other things. Just like a lot of other bodily processes that will improve."