I'm male and am 51 years old. I work in banking environment. Can I do pranayama like Kapalbhati and Anulom Vilom if I consume alcohol twice a week or so? Are there really bad side effects to it if I do it. I've just started doing pranayama for about a week now, Bhastrika - 2 mins, Anulom Vilom - 5 mins, Kapalbhati - 3 mins and Bhramri - 2 mins. After I do this, I do feel lightheaded sometimes. Please tell me what I'm doing wrong. I live in Canada and weather is extremely cold during winter time and the windows are closed. How can I manage to do these pranayams. Can I do it with no ventilation. I also have high blood pressure and I don't do the pranayams intensely, but rather moderately. i do want to continue with Pranayamas as I feel it's really effective and it helps to lower down the b.p. Please advise. Thanks!