Sometimes when your calcium/magnesium ratio is off, you can get twitching. I get one in my diaphram that feels like a fish flopping in my chest. If you are low in calcium intake, or very low in magnesium, the muscles do a dance of sorts. So you could try to balance that out.
(February 2017) A concrete slab is a common structural element of modern buildings. Horizontal slabs of steel reinforced concrete, typically between 4 and 20 inches (100 and 500 millimeters) thick, are most often used to construct floors and ceilings, while thinner slabs are also used for exterior paving.
This is the first step to any basement flooring. Flooring Straight on Slab: Some basement flooring can be installed directly on the concrete slab. Again, ceramic tile is the perfect example of this. Foam Underlayment: If installing laminate flooring, it is possible to install it directly on the concrete slab.