Answer:
When you are exercising, your muscles need extra oxygen some three times as much as resting muscles.
This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing
<span>There are many things that Lara can do in order to reduce the stress she is feeling after a tiresome day at work. For example, she could go and rest a bit, just sleep for a couple of hours and forget about the world. She could also read a book, or watch a movie/TV show, or play video games, if she is into that. She could do yoga, or go to a spa, or just hang out with her friends who are going to help her forget about her stressful day. Hope this helps!</span>
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