Going too far beyond what the body can handle with vigorous exercise, especially without taking time to build up to the level of exercise, is an example of
a. overuse
b. overexertion
c. incorrect technique
d. determination

Going too far beyond what the body can handle with vigorous exercise, especially without taking time to build up to the level of exercise, is an example of overexertion.

Doing something over and over and over again can be defined as overexertion, which is something that is done excessively (too much). Overexertion without taking a break in between, which is significant for exercising, can cause damage to the muscles and other life threatening symptoms. 

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b