Arousal describes a level of activation or alertness. It can concern excitement, stress, sexual response or readiness to act, depending on the context.
The word doesn’t automatically mean sex. And a racing heart doesn’t automatically mean danger.
Excited, frightened, or a little of both?
You’re about to show someone your work. Your pulse rises, your hands feel different and you suddenly have several excellent reasons to postpone.
There may be fear of judgement. There may also be pleasure in finally sharing something you care about. Naming only one leaves part of the experience out.
You can notice the physical response and consider the circumstances together. Perhaps you need a slower pace. Perhaps you want to continue with support. The task isn’t to become perfectly calm before doing anything meaningful.
Sensation helps describe what you notice without rushing to explain it. Discernment brings the situation back into the decision.
The National Institute of Mental Health’s I'm So Stressed Out! gives useful background on stress and anxiety. Read it for that part of activation, rather than treating every form of heightened energy as the same experience.