Apart from anxiety, stress can also result in shaking of the legs as the body releases pent-up tension.
When anxiety spikes, the nervous system can shift into fight-or-flight in seconds, but it can also be guided back toward balance just as quickly. Clinicians increasingly recommend brief "micro-resets" ...
Feeling nervous is a totally normal part of being human. Sure, it's not fun in any way, shape, or form, but I've always found that you're better off finding ways to channel that negative energy ...