If you are using your body as the exercise tool and increasing gradually you are preforming calisthenics fitness training.
Answer:
B
Explanation:
These are mostly used to treat pain, and are highly addictive if abused. Opioids temporarily reduce pain and anxiety. They create a sense of numbness in the body and mind. High doses can create a short-lived feeling of euphoria and drowsiness, but lead to a habit that can develop in addiction.
Answer:
Alpha nerve fibers
Explanation:
Alpha nerve fibers sense the relative position and functioning of the body’s different parts, such as whether your arm is above your head or whether you are standing or sitting. These nerves create a “mental map” of the current positioning of the body.