I've been exercising for about a year now and have dropped 60 lbs of fat, but having a hard time now dropping further. I had been mixing strength training with running, mostly aerobic long distance. Now after reading articles and such I'm trying to focus more on interval training for the days I'm not doing strength training.
My question has to do with the 12 minute jog I do before starting intervals, I use it to warm up a bit and get my Heart Rate Up. Then follow with 20 minutes of intervals and a 10-15 minute active recovery period of walking. I posted the download of my Heart Rate and would like some feedback from the experts if this is ok or could it be improved.