Thanks for posting your query.
The paresthesias you are feeling can be due to mild spinal nerve root compression
due to the posture or sitting on a hard surface. It can also result from electrolyte imbalance
like calcium or magnesium deficiency
. You can get a few blood tests done to detect the cause. Do discuss it with your doctor on your next visit.
I hope this answers your query.
In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out.
Please accept my answer in case you do not have further queries.
Wishing you good health.
Dr. Praveen Tayal.