Progressively Overloading his muscles, assuming he is doing weight training, to increase strength over time. he should not stay with the same weight for two months, unless he can perform more reps with better form over time.
Testing facilities that engage in animal testing dispose of both animals and dangerous chemicals, food waste, and a variety of supplies used during the testing process. Not to mention, animal testing has a heavy impact on water and air quality. Additionally, animal testing is cruel and ineffective. Animals don't get many of the diseases that humans do. For example, major types of heart disease, many types of cancer, HIV, Parkinson's disease, and schizophrenia. 100 million animals are killed each year due to animal testing.
They shouldn't speed up, because they could misread paper work or risk giving the wrong medication.
B. tolerance, dependence, addiction
