Interesting question! There could be a lot of causes to increased blink rate. You may want to relax and time duration from one blink to the next. 2 to 5 seconds is normal. Stress, anxiety, dry eye, allergies, lack of sleep, dirt, dust, pollen, these things can all increase your blink rate. So can just thinking about it!
All the best!
Dr. John Lowitz, OD