a piece of steel three fingers thick

If a reaction involves increased muscle tonus and too much inspiration, muscle relaxation and exhalation exercises might be of use.

Hey, don't take it personally. I was only messing around.

Another series 28 pulvinic acid derivatives was experimentally evaluated for their antioxidant capacity, and the obtained data was used for the construction of quantitative structure-activity relationship (QSAR) models, which additionally pointed out coumarines as potential antioxidants [5 ].