You should hold a stretch for as long as it does not become too painful for you. Stretch as much as your body needs but not too much because, it could tear up your muscles and tendons. This is the best answer i could give you.
Answer:
Environmental issues may present themselves as temporary or permanent changes to the atmosphere, water, and land due to human activities, which can result in impacts that may be either reversible or irreversible. Social issues may emerge in the workplace of a client’s/investee’s operations and may also impact surrounding communities.
Is it the sympathetic nervous system?
What are you asking mate?
Answer:
Nerve cells
Explanation:
Called neurons, they send messages to each other by releasing chemicals called neurotransmitters. Drugs affect this signaling process. “Bath salts” raise the level of one type of neurotransmitter, called dopamine, in brain circuits that control reward and movement.
The lungs. Breathing in crystalline silica can cause silicosis, which forms scar tissue in your lungs. Hoped this helped :)