hey im new to everything about fitness... i recently went from 210 to 160 and i'm looking for advice on how to get rid of the almighty DONUT! ive been jogging a good mile and a half for 5 days a week and into it 2 weeks... trying to keep 60-70% HR... u think i would lose my donut, spare tire, etc if i keep on doing this? and maybe bump up to 2 miles? ITS SO FRUSTRATING!