Answer: Hello, how are you? I'm here to answer your questions!
A romantic relationship is a close relationship to another person that involves deep friendship as well as physical intimacy and sex, and maybe even love. A platonic relationship is a relationship between friends, and while these relationships can be loving, they are not physically intimate.
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Your functions and blood are all moving by the force of gravity, so when everything is raised or lowered(moving your arm), your pulse wave changes. This can also result from subtlty in higher blood pressure, when activity occures. Just as your pulse waves changes in the rest of your body when excersising, you will have a slight change in pulse when simply moved your arm up and down, you're gettin' that blood pumping! ;)
Hope this helps :)
