Is 141/81 blood pressure is normal for me? i am 17 yrs old male

Elevated BP: For a young man of 17 years, that blood pressure is not normal. But the BP changes from minute to minute. Many things can raise blood pressure including smoking, high-salt diet, anxiety, alcohol, and exercise too. However 141/81 is not dangerously high either, so don't worry. Consider making some healthy changes if needed, and recheck the BP in a couple of weeks. If still high, go see a doctor.