Stretching leads to loose tissue, which can actually be harmful to a workout. Why? Doing explosive/strength-based exercises on loose muscles can interfere with your ability to produce as much force as normal and it could also lead to injuries. Stretching after a workout is far more beneficial.
This is true. Typically people with less body fat are less buoyant in water than those with more body fat. This also means they are more susceptible to cold temperatures than their chubbier companions in survival scenarios.
this collection is like 30% bullsh#t. Same with #1: nobody is talking about the individual cells, it is not meant literally.