Dr. Onugha recommends pursed lip breathing as the number one exercise for anyone with COPD. To perform this exercise: Breathe in through your nose for a count of three. Breathe out through pursed lips (as if you are blowing out a candle) for a count of three. Lynn suggests using this breathing exercise especially when you are exerting yourself. For example, if you're climbing up a flight of stairs, you can take a breath in before you climb, then begin breathing out with pursed lips as you climb a few steps, repeating with two to three steps at a time.