Myasthenia gravis is caused by an error in the transmission of nerve impulses to muscles. It occurs when normal communication between the nerve and muscle is interrupted at the neuromuscular junction, the place where nerve cells connect with the muscles they control.
Answer:
maybe true
Explanation:
It really depends on what you teacher/coach tells you but most times when doing CPR you should use try and do it, your trying to save lives.
I think lifting weights depending on what kind of weights you use or swimming
Finding out if an exercise is safe needs to determine the fitness level of the exercise and how much it takes to achieve the result of the exercise. The person performing the exercise needs to know their endurance level and if they are able to perform the exercise without injury or illness.