Answer:
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Explanation:
I think check with someone. Being in over your head means that you feel like you've blown things out of proportion or you're speculating but aren't sure about something. Asking someone else for their opinion and advice is really helpful.
<span>True, because many people are competitive by nature, so they need the challenge of a good competition in order to feel motivated to do the physical activity. If there is no competition, they don't feel compelled to engage in any physical activity. That's why those people tend to choose team sports or other activities in which they have to compete against other participants.</span>
Answer:
One muscle flexes while the other extends
Explanation:
<span>Anaerobic is the kind of</span> exercise that does not require the use of oxygen to metabolize energy. Anaerobic focuses more on muscle strength exercises such as lifting. Though it requires energy still it can be performed with less air.
