Calf cramp can be from trying too hard to stay on the front of the foot (point is to land on the ball of the foot first, not to keep the heel off the ground). But the treadmill really isn't going to teach you how the shoe works for you; get out on the road.
Calf cramp can be from trying too hard to stay on the front of the foot (point is to land on the ball of the foot first, not to keep the heel off the ground). But the treadmill really isn't going to teach you how the shoe works for you; get out on the road.