To be honest, I have yet to find a quality mass gainer on the market. The problem with most mass gainers is that they are loaded with cheap sugars as a carb source. Not only can this lead to greater fat gain, it can make drinking them several times a day unhealthy.
Mechanical stress: physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion.
1 There are three types of stress: compression, tension, and shear. 2  Stress can cause strain, if it is sufficient to overcome the strength of the object that is under stress. 3  Strain is a change in shape or size resulting from applied forces (deformation). It has the same units as pressure, but also has a direction (i.e., it is a vector, just like a force). 2  There are three types of stress: compression, tension, and shear. 3  Stress can cause strain, if it is sufficient to overcome the strength of the object that is under stress.