You can notice an argument coming through a change in body language or tone. As things escalate, more aggressive tones and body posture can be readily noticed.

You could start to notice a change in your body as early as the first week of cardiovascular exercise, or it could take as long as a month to notice results.

class clown

When you do notice the pain. Is it after you eat?

I've heard that you need four weeks to see changes in your body, and another four weeks before others notice.