Wow, during my wifit plus exercising this morning I managed to complete 1 hours exercise which included 24 minutes of running ( 8 x 3 minutes ) whilst holding a conversation with my wife, my peak heart rate was 141 bpm, I didn't feel breathless at all and felt l could have carried on if my legs held out. Amazing I have not managed to do that in a while !!
Feeling that surely my lung function readings have improved I checked and my FEV1 was 0.89. 28% and peak flow 250. I really fail to understand how my readings are so low and yet can exercise at that level.