Just thought I would add - I talked about this with my allergist before getting into exercise.

I also use my Ventolin before working out, even if I used the long-acting Advair in the AM.

She also prescribed Intal for before working out, if my lungs are cranky, or if the humidity is a little high, or if the barometer is rising. Intal is an older medicine (chromolin sulfate) that athletes sometimes use to just take that "twitch" out.

I agree - exercising with oxygen is AWESOME.