You might be experiencing this due to anxiety and stress With the increase of anxiety you become pumped up just like you were running in a race. Your heart rate may increase. Your brain is in overdrive, causing hot flashes and sweating.
Not to worry it is quite common in this healthy life style that we all lead. Try to relax by doing breathing exercise regularly. Use your belly (not your chest) to breathe. Inhale through your nose, and let it out through your mouth. Do this again and again, until you have control over your breathing. I am sure you will find much relief.
Pls do consult a doctor if your symptoms persist and need more help.
Annie