Hmmm, I only run outside as I don't have access to a treadmill. Are you setting the treadmill on a interval uphill, downhill and flat? That might help build your endurance to work up to the harder outside running. I looked for a place I could run that had minimum hills, around my house is NOTHING but hills, big ones and lots of them, I tried running a few times around my house and ended up crying with cramps a few minutes in, so I drive a few minutes to a Greenway that is paved and has some gradual up hill and down hills.
It's really hard to suck in your back fat.
| Pounds lost: 5.4