uphill treadmill for leg muscles?

[BronzedGoddess]

would doing 15% incline treadmill for 10-15 mins including in your leg workout be a bad idea when trying to bulk?

If you are mainly concerned with gaining mass and not necessarily cardiovascular conditioning at this point, cut out all the cardio, especially if you are an ectomorph. Wait until later to add the uphil walking if you are in your bulking phase.