Pre-exam anxiety

Does anyone of you experience symptoms causing by pre-exam anxiety? How do you relief the stress?

I can sort of feel that tension has been building up in the inner thigh (the tendon next to my ball), and as good as I can recall, I experienced unexplainable muscle tension in my right lateral abdomen prior to L1 exam in last June, and it went away couple weeks after. I attributed the unexplainable tension to stress due to the exam (and tradings in D3 as well, and yes I failed the exam last June lol. The game came out on 5/15, which was a very bad timing, and for about a week or so I didn’t do anything other than gaming)