Almost everyone in the West has a magnesium deficiency.
Most people don't eat cacao powder, so that is a bit difficult. But most greens have quite a lot of magnesium. An easy way to add it to diet, besides fresh greens, is to add a cube of frozen spinach to the boiling rice.
Also, magnesium overdose haven't been recorded, so one should be fine if one eats too much of it. Just keep an eye on the nitrate contents of the greens, as that can be toxic in high amounts. The leaf of beetroot for example. Although, if one does cardio, an increased amount of nitrate can give one a boost of oxygen in the blood. So it depends on how sedentary one is around the meal. That's always the case, isn't it. Calories in, calories out. colored wedding wears for over size ladies